inflation pressure AUDI TT COUPE 2017 Owners Manual

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able to provide you with more in­
formation .
® Mud and snow capability
"M/5" or "M+S" indicates the tire
has properties making it suitable
to drive in mud or snow .
& indi­
cates a winter tire .
@Composition of the tire cord
and materials
The number of plies indicates the
number of rubberized fabric lay­
ers in the tire. In general: the
more layers, the more weight a
tire can carry . Tire manufacturers
must also specify the materials
used in the tire. These inc lude
steel, nylon, polyester and other
materials.
@ Maximum permitted load
This number indicates the max i­
mum load in kilograms and
pounds that the tire can carry.
@ Uniform tire quality grade
standards for treadwear,
traction and temperature resistance
Tread wear, traction and temper ­
ature ranges
¢ page 271.
@ Running direction
@ Maximum permitted
inflation pressure
Wheels
This numbe r ind icates the maxi­
mum pressure to which a t ire can
be in flated unde r normal operat­
ing conditions.
Glossary of tire and loading
terminology
Accessory weight
means the comb ined we ight (in
excess of those standard items
which may be replaced) of auto­
matic transmission, power steer­
ing , power brakes, power win­
dows, power seats, radio, and heater, to the extent that these
items are available as facto ry- in­
s t alled equipment (whether in ­
stalled or not) .
Aspect ratio
means the ratio of the height to
the w idth of the tire in percen t.
Numbers of 55 or lower indicate a
lo w sidewall for improved stee r­
ing response and better overa ll
handling on dry pavement.
Bead
means the part of the tire that is
made of steel wires , wrapped or .,.
257

Wheels
reinforced by ply cords and that is
shaped to fit the rim .
Bead separation
means a breakdown of the bond
between components in the bead.
Cord
means the strands forming the
plies in the tire.
Cold tire inflation pressure
means the tire pressure recom­
mended by the vehicle manufac­
turer for a tire of a designated
size that has not been driven for more than a couple of miles (kilo­
meters) at low speeds in the
three hour per iod before the tire
pressure is measured or adjusted .
Curb weight
means the weight of a motor ve­
hicle with standard equipment in­
c lud ing the maximum capacity of
fuel, oil, and coolant, air condi­
tioning and additional weight of
optiona l equipment .
Extra load tire
means a tire designed to operate
at highe r loads and at h igher in­
flation p ressures than the corre ­
sponding standard t ire. E xtra load
tires may be identified as "XL",
2 58
"xl" "EXTRA LOAD" or "RF" on , ,
the sidewall.
Gross Axle Weight Rating
("GAWR")
means the load-carrying capacity
of a s ingle axle system, measured
at the tire-ground interfaces.
Gross Vehicle Weight Rating ("GVWR")
means the max imum total loaded
weight of the vehicle.
Groove
means the space between two ad ­
jacent tread ribs.
Load rating (code)
means the maximum load tha t a
tire is rated to carry for a given in­
flation pressure . You may not find
this informat ion on all tires be­
ca use it is not requi red by law .
Maximum load rating
means the load rating for a tire at
the maximum permiss ible infla­
tion p ressure for that tire.
Maximum loaded vehicle
weight
means the sum of:
(a) Curb weight
(b) Accessory weight
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(c) Vehicle capacity weight, and
(d) Production options weight
Maximum (permissible)
inflation pressure
means the maximum cold infla­
tion pressure to which a t ire may
be inflated. Also called "maxi­
mum inflation pressure."
Normal occupant weight
means 150 lbs (68 kg) times the
number of occupants seated in
the vehicle up to the tota l seating
capacity of your vehicle.
Occupant distribution
means distribution of occupants
in a vehicle.
Outer diameter
means the overall diameter of an
inflated new tire .
Overall width
means the linear dis tance be­
tween the exteriors of the side­
walls of an inflated tire, including
elevations due to labeling, deco ­
rations, or protective bands or
ribs.
Ply
~ means a layer of rubber-coated ...
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Wheels
Production options weight
means the combined weight of
those installed regular production
options weighing over 5 lbs (2.3 kg) in excess of those standard
items wh ich they replace, not pre­
viously considered in curb weight
or accessory weight, including
heavy duty brakes, ride levelers,
roof rack , heavy d uty ba tte ry , and
special trim .
Radial ply tire
means a pneumatic tire in which
the ply cords that extend to the
beads ar e laid at substantia lly
90
degrees to the centerline of the
tread.
Recommended inflation
pressure
see c:::> page 258, Cold tire infla­
tion pressure .
Reinforced tire
means a tire designed to operate
at higher loads and at higher in ­
fl at ion pressures than the corre­
sponding standard tire. Rein­
forced tires may be iden tified as
"X L" "x l" "EXTRA L OA D" or "RF" I 1 I
on the sidewall. ..,
259

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circumference as the regular
tires .
8,_ WARNING , -
-Only use tire/rim combina-
tions and suitable wheel bolts
that have been approved by
Audi. Otherwise, damage to
the vehicle and an accident
could result.
-For technical reasons, it is not possible to use tires from oth­
er vehicles -in some cases,
you cannot even use tires from
the same vehicle model.
-Make sure that the tires you select have enough clearance
to the vehicle. Replacement
tires should not be chosen simply based on the nominal
size, because tires with a dif­
ferent construction can differ greatly even if they are the
same size. If there is not
enough clearance, the tires or
the vehicle can be damaged
and this can reduce driving
safety and increase the risk of
an accident.
-Only use tires that are more
than six years old when abso­
lutely necessary and drive
carefully when doing so.
Wheels
-Do not use run-flat tires on
your vehicle. Using them when
not permitted can lead to ve­ hicle damage or accidents.
-If you install wheel covers on
the vehicle, make sure they al­
low enough air circulation to
cool the brake system. If they
do not, this could increase the
risk of an accident.
Tire wear/damage
Fig. 197 Tire profile : treadwear indica­
tor
Tire wear
Check the tires regularly for wear .
-Inflation pressure that is too low
or high can increase tire wear
considerably.
-Driving quickly through curves, rapid acceleration and heavy
braking increase tire wear .
-Have an authorized Audi dealer
or authorized Audi Service Facili­
ty check the wheel alignment if
there is unusual wear.
263
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@ Tips
When using snow chains, it may be useful to
switch on sport mode¢
page 89.
Low aspect ratio tires
Your Aud i is factory-equipped with low aspect ra­
tio tires. These t ires have been thoroughly tested
and been selected specifically for your model for
their supe rb performance, road feel and handling
u nder a va riety of d riving conditions. As k your au­
thor ized Audi dealer for mo re details.
The low aspect ratio of these t ires is indicated by
a numeral of
55 or l ess in the tire's size designa­
tion. The numera l rep resents the rat io of the
tire's sidewall he igh t in relat io n to its tread w idth
expressed in pe rcen tage. Conventional t ires have
a height/w idth rat io of 60 or more .
The performan ce of low -a spe ct-ratio tire s is par­
ticular ly sen sit iv e to improper inflation pre s­
s ur e. It i s therefore import ant that low a spect
ratio tire s are infl ate d to the specified pre ssure
and that the inflation pre ssure i s regularl y
c hecked and mai nta ined . Tir e pre ssure s should
b e che cked at least once a month and alw ay s
before a long tri p ¢
page 265.
What you can do to avoid tire and rim
damage
Low aspect ratio tires can be damaged more easi­
ly by impact with potholes, curbs, gullies or
ridges on the road, particularly if the t ire is un­
derinflated .
In order to minimize the occurrence of impact
damage to the tires of your vehicle, we recom­
mend that you observe the follow ing precau­
tions:
- Always maintain recommended inflation pres­
sures. Check your tire pressure every 2,000
miles (3,000 km) and add a ir if necessary .
- Drive carefully on roads with potho les, deep
gul lies or ridges. The impact from driving
t h rough or ove r such obstacles can damage
you r tires. Impact w ith a curb may also cause
damage to your tires.
Wh eel s
- After any impac t, immed iate ly inspect your
tires or have them inspected by the nearest au­ thorized A udi dealer. Replace a damaged tire as
soon as possible.
- Inspect your tires every 2,000 mi les (3,000 km)
for damage and wear. Damage is not a lways
easy to see. Damage can lead to loss of air and
underinflation, wh ic h could eventually cause
tire fa ilure . If you believe that a t ire may have
been damaged, replace the tire as soon as pos­
sible.
- These tires may wear more quickly than others.
- Please also remember that, while these tires
delive r responsive handling, they may ride less
comfortably and make mo re noise than other
choices.
Reduced pe rfo rmance in winter /cold season
conditions
All t ires are des igned for certai n purposes. The
low aspect ratio, ultra h igh performance tires
o rigi na lly installed o n your vehicle are intended
fo r m aximum d ry and wet road per formance and
handling . They are not sui table for co ld, snowy or
icy weather conditions . If you drive under those
circumstances, you should equip yo ur vehicle
with all-season or winter tires, which offer better
tract ion under those conditions. We suggest you
use the recommended snow or all-season tires
specified for your veh icle, or their equivalent.
Refer to¢
page 2 70 for more detailed informa­
t ion regarding winter tires.
Uniform tire quality grading
-T read wear
- Traction AA A 8 C
- Temperature ABC
Quali ty g rades can be fo und whe re applicable o n
the tire side wall between tread sho ulder and
maximum section width
¢page 255, fig. 196 .
For exampl e: Tread wear 200, Traction AA, Tem­
peratu re
A .
All passenger car t ires must conform to Fede ral
Safety Req uirements i n addit io n to these grades . .,,_
271

Wheels
Tread wear
The
tread wear grade is a compara tive ra ting
based on the wear rate of the t ire when tes ted
under contro lled conditions on a specified gov­
ernment test course.
F or examp le, a tire graded 150 would wear one
and one half (11/2) t imes as well on the govern­
ment course as a tire graded 100 .
The rela tive perfo rman ce of t ires depe nds upon
t he act ua l condi tions of their use, howeve r, and
may depart signif icant ly from the norm due to
variations in d riving hab its, service practices and
d ifferences in road characteristics and climate .
T raction
The
tra ction g rades, from highes t to lowes t, are
AA, A, Band
C. T hose gr ades represen t the t ire's
ab ility to stop on wet pavement as meas ured un ­
der controlled conditions on specified govern­ m ent test sur faces of asphalt and conc ret e. A tire
marked C may have poor traction performance
¢ &, .
Temperature The
temperature grades are A (the highest), B,
and C, representing the tire's resistance to the
generation of heat and its ability to d iss ipate
heat when tested under controlled conditions on
a specified indoor laboratory test wheel.
Sustained high temperature can cause the mate ­
rial of the tire to degenerate and red uce tire life,
and excess ive temperature can lead to sudden
tire failure ¢&, .
The gra de C corresponds to a leve l of perform­
ance which a ll passenger ca r tires must meet un­
der the Federa l Moto r Vehicle Safety Standard
No. 109. Grades Band A represent higher leve ls
of performance on the laborato ry test wheel than
the m in imum required by law .
A WARNING
-
The traction grade ass igned to this tire is
based on straight -ahe ad braking t ract ion
t e sts, and does not include a ccele rat ion, cor­
nering, hydrop laning o r peak tract ion charac­
teristics .
272
A WARNING
--
The temperat ure grade for th is tire is estab­
lished for a tire that is properly inflated and
n ot overloaded . Excessive speed, underinfla­
tion, o r excessive load ing, either separately or
in comb ina tion, can ca use hea t bu ildu p and
possib le tire f ailure.
A WARNING
Tempe rature g rades apply to tire s th at are
p rope rly inflated and not over o r underinfla t­
e d.
-
Tire pressure monitoring
system
ill General notes
E ach tire, including the spare (if p rov ided),
shou ld be checked monthly when cold and in flat ­
ed to the inflat ion press ure recommended by the
vehicle manufacturer on the vehicle placard or
tire inflation pressure labe l. (If your veh icle has
tires of a different size than the size ind icated on
the ve hicle placard or tire inflat ion press ure la­
bel, you sho uld dete rm ine the proper t ire infla­
tion press ure for those tires).
As a n added safety feature, your vehicle has been
equipped with a tire pressure mon itor ing system
(TPMS) that illuminates a low tire p ressure tell ­
ta le when o ne or mo re of your tires is s ignificant­
l y unde r-inflated. According ly, w hen the low t ire
pressure tell tale illum ina tes, you sho uld stop and
c h ec k yo ur t ires as soon as possib le, and inf late
t h em to the proper p ressure . Dr iving on a sign ifi ­
cant ly under-inflated tire ca uses the tire to over­
heat and can lead to tire fa ilure. Und er- inflation
also red uces fue l eff iciency and tire tread life,
and may affect the vehicle's handling and stop­
ping ability .
P lease note that the TPMS is not a s ubstitute fo r
proper tire maintenance, and it is the dr iver 's re­
spons ibility to main tain correct t ire pressure,
even if under -in flat io n has not reached the level
to trigge r illumination of the TPM S low t ire pres-
su re te lltale . .,.