flat tire AUDI TT ROADSTER 2008 User Guide

___ T_ i_ r_e _s_ a_ n_ d_ w_ h_ e_ e _ ls _________________________________________________ _
Occupant loading for vehicle normal load (no luggage)
Designated seating capacity , number of occupants
2
Cold tire inflation pressure
Vehicle normal load (no luggage ), number of occupants
2 •
Tire pressure affects the overall handling, performance and safety of a vehicle.
Fig. 160 Tire pressure
label: located on
driver's side B-pillar
Tire pressure generally refers to the amount of air in a tire that it
needs it to do its job and safely carry the combined load of the entire
vehicle and its contents. Tire pressure is measured in kilopascals
(kPal, the international measuring unit and in pounds per square
inch (PSll. Tire pressure is based in part on the vehicle's design and
load limit -the greatest amount of weight that the vehicle can carry
safely and the tire size . The proper tire pressure is frequently
referred to as the "recommended cold tire inflation pressure." Air in
the tires expands when the tire heats up because of internal friction
when it flexes in use. The tire pressure is higher when the tire has
warmed up than when it is "cold." It is the inflation pressure in a
"co ld" tire that counts. Therefore, you should never let air out of a
warm tire to match "cold tire inflation pressure" recommendations.
The tires would then be underinflated and could fail suddenly.
Main taining proper tire pressure is one of the most important
things you can do to help avoid sudden tire failure. Underinflated
ij
--~--------------- j
.(SEATING CAPAOn':jorAL l :FRONT l '.CENTER I '.REAR I )
The combmedwolghl "'°"'""""ond a,gor.hould ,_ l'>CC TIRE SIZE COLO TIRE PRESS URE
FRO l'rr -KPa, - PSI
REAR -KPa, - PSI
~ A_ R _ E i..===..=;;;..;.;; KP..;;a, :.=;;;;;..;.. PS;;..;.I_
MANUAL FOR
ADDITIONAL
I N FORMATION SEE OWNER'S I
Fig. 161 Tire pressure
label
tires are a major cause of sudden tire failure. Keeping tires at the
right pressure is also important for safe and responsive vehicle
handling, traction, braking and load carrying .
Tire pressures are
particularly important when the vehicle is being driven at higher
speeds, and then especially when heavily loaded even within the
permissible load-carrying capacities approved for your vehicle.
The recommended tire pressures for your Audi depend on the kind
of tires on your vehicle and the number of passengers and/or
amount of luggage you will be transporting.
The tire pressure label located on driver's side B-pillar on your Audi
lists the recommended cold tire inflation pressures for the vehicle
at its maximum capacity weight and tires that were on your vehicle
at the time it was manufactured .
If you wish to improve comfort when operating the vehicle at
normal load (no luggage) up to 2 occupants, you can adjust tire
pressures to those specified for normal vehicle load. Before oper-
i.,.

__________________________________________________ T_ ir_e_ s_ a_ n_d _ w_ h_ e_ e_l_s __ __
•
ating the vehicle at ma ximum load , you must increase the t ire pre s­
sures to those specified for maximum vehi cle load
~ & .
Bear in mind that the t ire pressure mo nitoring system can only
monitor the tire pressures you have stored . The system does not
reco gnize the load cond itio n of your vehicle.
T he effectiveness of the tire pressure monitoring system will be
impaire d if you stor e nor mal loa d pressures but then operate the
vehic le at its maximum load~&. See the
illustration~ page 242, fig. 160 for the location of the label
on driver's si de B -pillar (co lor of the ac tual label a nd exact loca tion
on the veh ic le will vary slightly).
N ote that the following tab le is accu rate at the time of going to
press and is subject to cha nge . In t he event o f discrepancies, the t ire
pressure label (on driver's side B -pillar) a lways takes precedence .
The table belo w lists t he r ecom mend ed cold tire i nflatio n pressures
for the Audi mode l covered by your Owner's Literature at the
vehic le' s capacity weigh t and the tire size s insta lled o n the respec ­
tive models as original equipment , or as a factory option .
Engine Tire designation
Tire pressure front II Tire pressure rear
(displace -
= " full load full load
ment in normal load
condition normal
load
condition
liter ) condition
(up to condition (up
( 2 oc cupants (2 occupants
2 o ccupants ) to 2 occupants)
plus luggage) plus luggage)
I
PSI II kPA PSI II kPA II PSI II kPA
PSI I[ kPA I
I
4-cylinder
225/50 R17 94H All Season 32 220 3 2 220 29 200 29 200
2.0
245/40 R18 93H All Season 32 220 32 220 29 200 29 200
245 /40 R18 93Y XL High Performance 32 220 32 220 29 200 29 200
255 /35 R19 95Y XL High Performance 32 220 32 220 29 200 29 200
6 -cylinder 245/45 R17 95H All Season 3 2 220 32 2 20 29 200 29 2 00
3.2
245/40 R18 93H All Season 32 220 32 220 29 200 29 200
245 /40 R18 93V XL High Performance 32 220 3 2 220 29 200 29 200
255/35 R19 95V XL High Performance 32 2 20 32 220 29 200 29 200
XL = reinforced
T he correct tire pressure for the spare wheel is located on a label on the tire p ressure label on your vehicle with the tires on your vehic le.
t he d river's s ide B -pilla r. Make sure that the tire s ize inf ormat ion on t he veh icle labe l is t he
Because technical changes may be made to vehicle equipment same as the si
ze of the tires on the vehicle. This is especially impor -
t ant if the ve hicle belongs to so meo ne else or you bought the
dur ing th e mode l year, always co mpare the tire size designa tion on
Vehicle care
I t •
.,

-~_T_ ir_e_ s_ a_ n_d _ w_ h_ e_e _l_s _________________________________________________ _
vehicle with different rims/tires or you bought the vehicle as a previ­
ously owned vehicle.
Remember, your safety and that of your passengers also depends
on making sure that load limits are not exceeded. Vehicle load
includes everybody and everything in and on the vehicle. These load
limits are technically referred to as the vehicle's Gross Vehicle
Weight Rating ("GVWR"). The Gross Axle Weight Rating ("GAWR") is
the maximum load that can be applied at each of the vehicle's two
axles. The Gross Vehicle Weight Rating and the Gross Axle Weight
Rating are listed on the safety compliance sticker label located on
the driver's side 8-pillar. The tire pressure label on your Audi lists
the maximum combined weight of all of the occupants and luggage or other cargo that the vehicle can carry. For the location of the tire
pressure label =>
page 242, fig. 160.
& WARNING
Overloading a vehicle can cause loss of vehicle control, a crash or
other accident, serious personal injury, and even death.
• Carrying more weight than your vehicle was designed to carry
will prevent the vehicle from handling properly and increase the risk of a loss of vehicle control.
• The brakes on a vehicle that has been overloaded may not be
able to stop the vehicle within a safe distance.
• Tires on a vehicle that has been overloaded can fail suddenly
causing loss of control and a crash.
& WARNING
• Incorrect tire pressures and/or underinflation can lead to a
serious or fatal accident.
• Incorrect tire pressures and/or underinflation cause increased
tire wear and can affect the handling of the vehicle.
& WARNING (continued)
• Incorrect tire pressures and/or underinflation can also lead to
sudden tire failure, including a blowout and sudden deflation,
causing loss of vehicle control . •
Checking tire pressure
The correct tire pressure for the tires originally installed
on your vehicle is listed on the tire pressure label located
on driver's side 8-pillar.
The recommended tire pressures are on the tire pressure label and
in the table=>
page 242, "Cold tire inflation pressure". This means
that the pressure must be checked and adjusted when the tire has
not been driven for more than a couple of miles (kilometers) at low
speeds during the previous three hours. Air in the tires expands
when the tire heats up as a result of internal friction as it flexes in
use. The tire pressure is higher when the tire has warmed up than
when it is "cold."
It is the inflation pressure in a "cold" tire that counts. Therefore, you
should never let air out of a warm tire to match "Cold tire inflation
pressure" recommendations=>
page 242. The tires would then be
underinflated and could fail suddenly.
The tire pressure label on your Audi lists the recommended cold tire
inflation pressures for the new, original equipment tires that were
on your vehicle at the time it was manufactured . For the location of
the label
=> page 242, fig . 160.
Most tires lose air naturally over time. They can also lose some air if
you drive over a pothole or hit a curb while parking . It is usually not
possible to see whether the radial tires used today are underinflated
just by looking at them .
Therefore, be sure to check tire pressures at least once a month and
always before going on a long trip. Make sure to take the number of
people and the amount of luggage into account when adjusting tire .,_

________________________________________________ T_ i _r_e _s_ a_n_ d_ w_ h_ e_e _ l_s __ _
•
pressure for a trip - even one that you would not consider to be
"long." See=>
page 246, "Tires and vehicle load limits" for more
important information .
Always use an accurate tire pressure gauge when checking and adjus ting inflation pressures . Check all of the tires and be sure not
to forget the spare tire . If the pressure in any tire is too high when
the tire is "cold," let air out of the tire slowly with the edge of the tire gaug e and keep checking the pressur e until you reach the pressure
that is correct for the load (passengers and luggage) and kind of driving you plan to do.
I f the pressure in any tire is too low, note the difference between the
pressure in the cold tire and the pressure you need and add the air
that you need to reach the correct pressure for the vehicle load
(passengers and luggage) for the tires on your vehicle as listed on
the on your vehicle and in this manual and the kind of driving you
plan to do.
Ne ver e xceed the m aximum inflat ion pre ssure l isted on the tire
sid ewall for any rea son .
Remember that the veh ic le manufacturer, not the tire manufacturer ,
determin es the correct tire pressure for the tires on your vehicle .
It is important to check the tire pressure when the tires are cold .
• Read the required tire pressure from the tire pressure label
located on driver 's side 8 -pillar.
• T urn the va lve stem cap counter -clockwise to remove it from the
tire valve .
• Place the air pressure gauge on the valve .
• The tire pressures should only be checked and adjusted when
the tires are cold. The s lightly raised pressures of warm tir es mus t
not be reduced.
• Adjust the tire pressure to the load you are carrying .
• Reinstall the va lve stem cap on the valve .
When should I ch eck the tir e pr essu re?
The correct tire pressure is especially important a t high speeds . The
pressure should therefore be checked a t least once a month and
a lways before sta rting a journey.
Wh en sho uld I adjust the tire p re ss ure s?
Adjust the tire pressure to the load yo u are carrying . After changing
a wheel
o r replacing wheels you have to adjust the tire pressures on
a ll whee ls . In addition, you must then initia lize the new tire pres ­
sures in the tire pressure monitoring system=>
page 41.
& WARNING
Incorre ct t ir e pre ssures and /or underinfl ati on ca n lead sudden tire
failure , los s of contro l, colli sion , seriou s per sonal injury or even
death .
• Whe n the w arnin g sy mbol appear s in the instrument
cl uster , sto p and in spe ct the tire s.
• Inco rre ct tire pre ssure and /or underin flati on can cau se
in creased tire wear and can affe ct the ha ndling of the vehicle and
s topping ability.
• Incorre ct t ire pre ssures and /or underinfl atio n c an a ls o le ad to
s udden tire f ailure , including a blowout and sudden deflation ,
ca usi ng loss o f vehi cle co ntrol.
• The driv er i s re sp o nsible for the correct tire p re ss ure s for all
tire s on the vehicle . T he appl icable pre ssure v alu es are lo ca ted o n
a stic ker on th e driver 's side B -pillar.
• Onl y w hen all tire s on th e veh icle a re fi lled to the corre ct pre s­
s ure , the tire pre ssure monitor ing sy ste m can work correctly .
• The u se of incorre ct t ire pr essure val ues can lead to accidents
or other d am age. The refo re it is esse ntial th at the dri ver ob serve
the spe cified tire pr essur e value s fo r the t ire s and the correc t pr es­
s ures for the function of the tire pr essure monitoring sy stem.
• Always inflate t ires to the r ecom mended and corre ct tir e pr es -
su re bef ore dri ving off.
~
Vehicle care I t •

-~_T_ ir_e_ s_ a_ n_d _ w_ h_ e_e _l_s _________________________________________________ _
& WARN ING (continued )
• Driving with underinflated tires bend more , letting them get
too hot re sulting in t read separation , sudden t ire failure and loss
of control.
• Excessive speed and /overloading can cau se heat bu ild-up ,
sudden tire failure and lo ss of control.
• If the tire pressure is too low or too high , the tires will wear
prematurely and the vehicle will not handle well .
• If the tire is not flat and you do not have to change a wheel
immediately, drive at reduced speed to the nearest service station
to che ck the tire pres sure and add air as required .
0 Note
Driving without valve stem caps can cause damage to the tire
va lves. To prevent this, always ma ke sure that fact ory insta lled valve
stem caps on all whee ls are securely mounted on the valve .
<£> For the sake of the environment
Underinflated tires will also increase the fue l consumption. •
Tires and vehicle load limits
There are limits to the amount of load or weight that any vehicle and
any tire can carry. A vehicle that is overloaded will not handle well
and is more difficu lt to stop. Overload ing can not only lead to loss
of vehicle contro l, but can a lso damage important parts of the
veh ic le an d ca n lead to sudden t ire fa ilu re , inc lud ing a bl owout a nd
sudden deflation that can cause the vehicle to crash.
Yo ur saf ety a nd that of you r passenge rs also de pends on making
sure that load limits are not exceeded . Vehicle load includes every ­
body and eve ryt hing in and on the vehic le . Th ese load limi ts are technica
lly referred to as the vehicle's
Gross Vehicle We ight Rating
("GVWR").
Th e "GVWR" includes the weight of the basic vehicle, all factory
insta lled accessories, a ful l tank of fuel, oil, coolant and other f luids
p lus max imum load. The ma ximu m load inc ludes the numbe r of
passengers that the vehicle is intended to carry ("seating capacity")
w it h an assu med we ight o f 150 lbs (68 kg) for eac h pass enger at a
designated seating position and the total weight of any luggage in
t he vehicle.
T he
Gross Axle Weight Rating ("GAWR"l is the maximum load that
can be a pplied a t eac h of the vehic le's two a xles .
T he Gross Veh icle Weigh t Rat ing a nd the Gross A xle We igh t R ating
are listed on the safety comp liance stic ker label located on the
dr iver's s ide B -p illar . You r Aud i has 2 sea ting pos it io n s. Eac h seating
posit ion has a safety belt=>
page 137, "Safety belts".
T he fact that the re is a n up per lim it to yo ur vehicle's G ross Veh ic le
We ig ht Rating means that the to tal we ight o f what ev e r is be ing
ca rried in the ve hicle is lim ited. The mo re pas se ngers in the vehic le
or passe ngers w ho ar e heav ier t han th e sta ndard weights assumed
mean that less weight can be carried as luggage.
T he ti re p ress ure labe l on yo ur Aud i al so list s the maxi mum
combined weight of a ll of the occupants and luggage or other cargo
th at the vehicle can car ry. F or the lo ca tio n of t he label =>
page 242,
fig . 160.
& WARNING
Overloading a vehicle can cause loss of vehicle control , a crash or
other accident, serious personal injury , and even death .
• Carrying more weight than your vehicle was des igned to carry
will prevent the vehicle from handling properly and increase the risk of the loss of vehi cle control .
• The brakes on a vehicle that has been overloaded may not be
able to stop the vehicle within a safe distance. .,_

& WARNING (continued)
• Tires on a vehicle that has been overloaded can fail suddenly,
including a blowout and sudden deflation , causing loss of control
and a crash .•
Determining correct load limit
Use the example below to calculate the
total weight of the passengers and
luggage or other things that you plan to
transport so that you can make sure that
your vehicle will not be overloaded.
Steps for Determining Correct
Load Limit
1. Locate the statement "THE COMBINED
WEIGHT OF OCCUPANTS AND CARGO SHOULD NEVER EXCEED XXX KG OR XXX
LBS"on your vehicle 's placard (tire infla­
tion pressure label)=;>
page 242, fig. 160.
2. Determine the combined weight of the driver and passengers that will be riding
in your vehicle.
Tires and wheels 1111111
3. Subtract the combined weight of the driver and passengers from
"XXX" kilo­
grams or
"XXX" pounds shown on the
sticker =;>
page 242, fig. 160.
4. The resulting figure equals the available amount of cargo and luggage load
capacity. For example, if the
"XXX"
amount equals 1400 lbs. and there will be five 150 lbs. passengers in your
vehicle, the amount of available cargo and luggage load capacity is 650 lbs.
( 1400 -750 (5 x 150) = 650 I bs.)
5. Determine the combined weight of
luggage and cargo being loaded on the
vehicle. That weight may not safely exceed the available cargo and luggage
load ca pa city calculated in Step 4.
6. If your vehicle will be towing a trailer, load from your trailer will be transferred
to your vehicle. Consult this manual to determine how this reduces the avail­
able cargo and luggage load capacity of
your vehicle. .,_
Vehicle care I • •

.,,.___T_ ir_e_ s _ a_ n_d_ w_ h_ e_e _ l_s _________________________________________________ _
0
©
G)
U.S. DOT tire identification number
Sever snow conditions
Tire ply composition and materials used
Maximum load rating
Treadwear, traction and temperature grades
@ Maximum permissible inflation pressure
The tires and rims are essential parts of the vehicle's design. The
tires and rims approved by Audi are specially matched to the char­ acteristics of the vehicle and can make a major contribution to good
road holding and safe handling when in good condition and prop ­
erly inflated =>& .
We recommend that al l work on tires and wheels be performed by
an authorized Audi dealer . They are familiar with recommended
procedures and have the necessary special tools and spare parts as
we ll as the proper facilities for disposing of the old tires .
Authorized Audi dealers have the necessary information about tech ­
nical requirements for insta lling or changing tires and rims .
Rep lac ing t ires a nd w heels
Tires should be replaced at least in pairs and not individually (for
example both front tires or both rear tires together) .
Be sure to read and heed the information to the tire pressure moni ­
toring system =>
page 251.
Always buy replacement radial tires t hat have the same specifica ­
tions as the tires approved for your vehicle by Audi . Replacement
tires must always have the same load rating specification as the
original equipment or approved optional tires listed in the table
=>
page 242.
Audi -approved specification tires are specially matched to your
vehic le and its load limits, and can contribute to the important road- holding, driving characteristics, and safety of the vehicle
. The tab le
( =>
page 242) lists specifications of the tires approved for the Audi
models covered by your Owner's Literature.
The tire pressure labe l located on driver's side 8 -pillar (=>
page 242,
fig. 161) lists the spec ifications of the original equipment tires
installed on your vehicle at the time it was manufactured.
Federal law requires tire manufacturers to place standardized in for­
mation on the sidewall of all tires=>
page 249, fig. 164 . T his informa­
tion identifies and describes the fundamenta l characteristics, the
quality grade of the tire and also provides a tire identification
number for safety standard certification and in case of a recall.
T ire s pec ifica tio ns
Know ledge of tire specifications makes it easier to choose the
correct tires . Radial tires have the tire specifications marked on the
sidewal l, for example:
P 2 45 / 45 R 17 95 H
This contains the following information :
P Indicates the tire is for passenger cars
24 5 Nominal tire width in mm of the tire from sidewall edge to side-
wa ll edge . In general, the larger the number, the wider the tire
45 Height/width ratio in percent (aspect ratio)
R Tire construction: Radial
17 Rim diameter code (in inches)
95 Load rating code
H Speed rating letter code
X L (or "xi", "EXTRA LOAD", or "RF") indicates that the tire is a"Rein ­
forced" or an "Extra Load" ti re
M+ S (or "M/S") Indicates that the tire has some mud and snow capa ­
bility
The tires could also have the information of direction of rotation =>
page 238.

-Tires and wheels
P'tr:1-------------------
will not work prope rly . In this case, the tire pressure monitoring
s ys tem would n ot b e ab le to mon itor the tire p ressure or wa rn yo u
if it is necessary .
• The battery inside of the tire pressure sensor has a limited
se rvice life .
• Always d rive with the valve stem caps sec urely mounted . We
recommend using factory insta lled valve stem caps . Ask your au tho ­
rized Audi dealer to replace lost va lve stem cap s.
The installation o f rep laceme nt tire s wi th steel cor d body p lies in
the tire sidewal l may cause malfunction of the tire pressure moni ­
t or ing sys tem, a nd is no t re com mended (cord mater ial i nformat ion
in molded on the tire sidewa ll) .
A lw ays check your tire p ressure monito rin g s ystem i ndicator afte r
replacing o ne or mor e tir es o n you r vehi cle. If th e tire p ressu re
monito ring syste m indicat or flashes, o r is on, you r sy stem is not
wo rk in g pr oper ly. Your rep lac em ent ti re mig ht be i nco mpat ibl e wi th
your tir e pressure monitoring syst em , or som e component o f th e
tir e pr ess ure monito ring syste m may be da mag ed.
& WARNING
• Using incorrect or unmatched tires and/ or wheels or improper
tire and wheel combinations can lead to loss of control, collision
and serious personal injury .
• Always use tires , rims and wheel bolts that meet the specifica­
tions of original factory -installed tires or other combinations that
have been spe cifically approved by the vehicle manufacturer.
• Tires age even if they are not being used and can fail suddenly ,
especially at high speeds . Tires that are more than 6 years old can
only be used in an emergency and then with special care and at
lower speeds .
• Never mount used tires on your vehi cle if you are not sure of
their "previous history. " Old used tires may have been damaged
even though the damage cannot be seen that can lead to sudden
tire failure and loss of vehi cle control.
& WARNING (continued)
• All four wheels must be fitted with radial tires of the same type,
size (rolling circumference ) and the same tread pattern. Driving
with different tires reduces vehicle handling and can lead to a loss
of control.
• If the spare tire is not the same as the tires that are mounted
on the vehicle -for e xample with winter tires -only use the spare
tire for a short period of time and drive with extra care . Refit the
normal road wheel as soon as safely possible.
• Never drive faster than the maximum speed for which the tires
on your vehicle are rated because tires that are driven faste r than
their rated speed can fail suddenly .
• Overloading tires cause heat build-up , sudden tire failure ,
including a blowout and sudden deflation and loss of control .
• Temperature grades apply to tires that are properly inflated and
not over or underinflated .
• For te chnical reasons it is not always possible to use wheels
from other vehicles -in some cases not even wheels from the
same vehicle model.
• If you install wheel trim discs on the vehicle wheels, make sure
that the air flow to the brakes is not blocked. Redu ced airflow to
the brakes can them to overheat , increasing stopping distances
and causing a collision.
• Run flat tires may only be used on vehicles that were equipped
with them at the fa ctory . The vehicle must have a chassis designed
for run flat tires and a factory -installed tire pressure monitoring
system that indi cate s a loss of tire pressure . Incorre ct use of run
flat tires can lead to vehicle damage or accidents . Check with an
authorized Audi dealer o r tire specialist to see if your vehicle can
be equipped with run flat tires .
If run flat tires are used, they must
be installed on all four wheels . Mixing tire types is not permitted. .,

Tires a nd wh eels -
----------------
•
0 Note
• For technical reasons, it is not genera lly possible to use the
whee l rims from other vehic les. This can hold true for wheels of the
same vehic le type.
• If the spare tire is different from the tires that you have mounted
on your vehicle (for example winter tires or wide p rofile t ires), then
use the spare tire for a short period of time only and drive with extra
care. Rep lace the flat tire with the tire matching the others on your
vehicle as soon as possible.
• If you should put different wheels and tires on your vehic le (e.g.
winter wheels and tires), you must be certain that the wheels and
tires are compat ib le w ith the tire pressure monitoring system.
Otherwise the system will register a malfunction and a fault
message will be displayed . For more informatio n, contact your Aud i
dea ler.
0 Note
• When insta lling new tires, be carefu l not to damage the va lves or
t ire p ressure moni toring syste m sensors .
• Never drive without the va lve stem cap. The va lves could get
damaged.
• I f the sensors must be replaced, then the valve must also be
replaced at t he same t ime.
Dispose of o ld tires in accordance with the local requ irements .•
Uniform tire quality grading
• Tread wear
• Traction AA A B C
• Temperature A B C Qua
lity grades can be found where applicable on the tire side wall
b etween tread shoulder a nd maximum section width =>
page 249,
fig. 164.
For example : Tread wear 200, Traction AA , Temperature A.
All passenger car tires must conform to Federa l Safety Require ­
ments in addit ion to these grades.
T read wear
The tread wear grade is a comparative rating based on the wear rate
o f t he tire when tes ted under contro lled condit ions on a specified
government test course.
F o r example, a tire g raded 150 would wear one and one half (1 1 /2)
times as well on the government course as a tire graded 100.
The relative performance of tires depends upon the actual condi ­
tions o f the ir use, however, and may depart sign ificantly from the
norm due to variations in driving habits, service practices and differ ­
ences in road characterist ics and c limate .
Traction
The traction grades, from highest to lowest, are AA, A, Band C.
Those grades represent the tire 's ability to stop on wet pavement as
measured under contro lled cond itions on specified government
test surfaces of asphalt and concrete. A tire marked C may have
poor t raction performance =>& .
Temperature
The temperature grades are A (the highest), B, and C, represent ing
the tire 's resistance to the generation of heat and its ability to dissi ­
pat e heat when tested u nder con tro lled co nditions on a specified
indoor laboratory test wheel.
Sustained high temperature can cause the material of t he ti re to
degenerate and reduce tire life, and excessive temperature can lead
to sudden tire failure=:>& .
The grade C corresp onds to a level of performance which all
passenger car tires must meet under the Federa l Motor Vehicle
Vehicle care I t •

-~_T_ ir_e_ s_ a_ n_d _ w_ h_ e_e _l_s _________________________________________________ _
Safety Standard No. 109. Grades Band A represent higher leve ls of
performa nce on th e la boratory test w hee l tha n the minim um
requ ired by law .
& WARNING
The traction grade assigned to this t ire is based on straight-ahead
braking traction tests , and does not include acceleration ,
cornering , hydroplaning or peak traction characteristi cs.
& WARNING
The temperature grade for this tire is established for a tire th at is
properly inflated and not overloaded. Exces sive speed , underinfla­
tion, or excessive loading, either separately or in combination , can
cause heat buildup and possible tire failure. •
Winter tires
Win ter tires can im prove veh icle ha ndl ing on sno w and
i c e. A t te mp eratu res belo w 4 5 °F (7 ° C) w e r eco mme nd
c ha ng in g to winter tir e s.
In some heavy snow areas, local governments may require true
winter o r "snow" tire s, those with ve ry deeply cut tread. These tires
should only be used in pairs and be insta lled on a ll four wheels .
M ake s ure you p urchase snow ti res that are the same s ize and
construct ion type as the other ti res on your vehicle.
If your vehic le is equipped with al l-wheel drive *, this will improve
t rac tion dur ing winter dr iv in g, eve n with the standard tires .
However, we strongly recommend that you a lways equip all four
whee ls on y our vehicle with correc tly fitted winte r tires or all-seas on
tires, when winter road conditions are expected . Th is a lso improves
t he ve hic le 's brak ing perfo rmance an d reduces s top ping distances .
Summer ti res p rovide less grip on ice and snow. Winter tires (snow tires) must always be fitted on all four whee
ls .
Compatible ti re p ressure monit oring senso rs must be instal led on
a ll four w inter tires for the tire pressure monitoring system to func ­
tion proper ly :::::> page 251.
Ask your aut hori zed Audi deale r or quali fied w orksho p for perm itte d
winter tire size s. Use only radial winter tires.
Wi nter tires lose thei r effec tiveness when the tread is worn down t o
a depth of 0. 157 inch (4 mm).
On ly drive with winter tires under winter conditions. Summer tires
h an dle better when there is no s now or ice on t he roads a nd th e
temperature is above 45 °F (7 °C) .
I f you have a flat tire, see n otes on spare w hee l :::::> page 249.
Please a lways remembe r that w inte r tires may have a lower speed
r ating than the tires original ly instal led on your vehic le at the time
i t was manu fac tured. Please see:::::> page 251, "Speed rating (letter
code)" for a listing of the speed rating letter codes and the
m ax imum speed at which t he ti res ca n be drive n.
T he speed rating letter code(:::::, page 241) is on the side wa ll of the
ti re :::::> page 2 49. & WARNING
Winter tires have maximum speed limits that may be lower than
your veh icle's ma ximum speed . Always know the maximum speed
before driving off . Never drive faster than the speed permitted for
your specific winter tires . This will cause damage to the tires
leading to an accident and serious personal injury to you and your
pa ssengers.
& WARNING
Driving faster than the ma ximum speed for whi ch the winter tires
on your vehicle were designed can cause tire failure including a
blowout and sudden deflation , los s of control , crashes and serious _.,