tire size AUDI Q5 2015 Owners Manual

Smart Technology
wheels can spin even with these assistance
systems that cannot always help to reduce
the risk of loss of vehicle control.
@ Tips
-ABS and ASR only work correctly when all
four whee ls are equipped with identical
Switching on/off
tires . Different tire sizes can lead to a reduc­
tion in engine power .
- You may hear noises when the systems de­
scribed are working.
- When installing a factory-supplied roof rack
system on the roof railing, the ESC will
adapt itself to a different center of gravity.
ESC turns on automatically when you start the engine.
Fig. 185 Version A: Lower center console, YJ. OFF butto n
The fo llow ing situations are exceptions where it
may be useful to sw itch on offroad mode to allow
the wheels to spin:
- Rocking the vehicle to free it when it is stuck
- Driving in deep snow or on loose ground
Offroad mode on
Fig. 186 Ve rs ion B: Upper center co nsole, YJ. O FF button
-Driving with snow chains
- Driving downhill while braking on loose ground
- Driving on rough terrain when much of the car's
weight is lifted off the wheels (axle articula­
tion)
Offroad mode off
Behavior
The ESC and ASR stabilization functions are The full stabilization function of the ESC
limited
c> & .
Operation Press the l.13 OFF I button.
Indicator Ill turns on.
lights
Driver mes· Stabilization control (ESC): Offroad .
sages Warning! Restricted stability
A WARNING
- You should only switch offroad mode on if
your driving abilit ies and road conditions
permit.
- The stabilization function is limited when offroad mode is switched on. The driving
wheels cou ld spin and the vehicle could
swerve, especially on slick or slippery road
surfaces.
192
and ASR is availab le again.
Press the
1.$ OFF I button again.
II turns off.
Stabilization control (ESC): On
(D Tips
Offroad mode cannot be switched on when
adaptive cruise control" is switched on .

Smart Technolog y
A center differentia l distributes the driving power
variably to the front and rear axle. It works to­
gether with selective wheel torque contro l, which
activates when driving through curves
c:::;,page 191.
The all-wheel drive concept is designed for high
engine power . Your vehicle is exceptionally pow­
erful and has excellent driving characteristics bo th under normal driv ing condit ions and on
snow and ice . Always read and follow safety pre ­
cautions
c:::;, .&. .
Wint er tires
When driving in the winter, your vehicle with all­
wheel drive has an advantage, even with regular
tires. In winter road conditions it may be advisa­
ble to mount winter tires (or all-season tires) for
improved dr iveability and braking: these tires
must be mounted on
a ll four wheels . See a lso
c:::;, page 250, Winter tires.
Tire chain s
Where tire chains are manda tory on certain
roads, this normally also applies to vehicles with
all-wheel drive c:::;, page 250, Snow chains.
Repl acing wheels /tire s
Vehicles with all-whee l drive must always have
tires of the same size. Also avoid tires with differ­
ent tread depths . For deta ils see page
c:::;, page 242, New tires or wheels .
A WARNING
Always adjust your driving to road and traffic
conditions. Do not let the extra safety afford­
ed by all-wheel drive tempt you into ta king
extra r is ks.
- Althoug h the all-whee l dr ive is very effec­
t ive, always remember that brak ing capac ity
is limited by tire traction . You should there­
fore not drive at excessive speeds on icy or slippery road surfaces .
- On wet road su rfaces, be careful not to drive
too fast because the front wheels could be­
gin to slide on top of the water (aquaplan­
ing). If this should occur, you will have no
warning from a sudden increase in engine
speed as with a front -whee l drive vehicle.
196
Always drive at speeds which are suited to
the road cond it ions -risk of crash.
Energy management
Starting ability is optimized
Energy management controls the distribution of
electrical energy and thus optimizes the availa­ bility of electrical energy for starting the engine .
If a vehicle with a conventional energy system is
not driven for a long period of time, the battery
i s d ischarged by idling current consumers (e .g .
i mmob ili zer). I n certain c ircumstances it can re­
s ul t in the re be ing insuffi cient energy available to
start the eng ine.
Intelligent energy management in your vehicle
hand les the d ist ribution of electrical energy.
Start ing ability is ma rkedly improved and the life
of the ba ttery is extended .
Bas ica lly, energy management consists of
bat­
t e ry diagn osi s, idling curr ent man ag ement
and
d ynami c energy management .
Batte ry diag nosi s
Battery diagnosis continuously determines the
state of the battery. Se nsors determine battery
vo ltage, battery current and battery tempera­
tu re. This determines the cu rrent state of cha rge
and the power of the battery .
Idling current management
Idling current management reduces energy con ­
sumption whi le the vehicle is standing . W it h the
i gnition switched off, it cont ro ls the energy sup­
ply to the various electrical components. Data
from battery d iagnosis is cons idered.
Depend ing on the battery's state of charge , indi­
v idual consumers are gradua lly tu rned off to pre­
vent excessive discharge of the batte ry and thus
maint ain s tarting capability.
Dynamic ener gy management
While the vehicle is being driven, dynamic ene rgy
management distr ibutes the energy gene rated
accord ing to the needs of the individual compo-
nents. It regu lates consumption, so that more
II>

Wheels
(D Tires for passenger vehicles
(if applicable)
P indicates a tire for a passenger
vehicle. T indicates a tire desig­
nated for temporary use .
@ Nominal width
Nominal width of the tire be­
tween the sidewalls in millime­
ters . In general: the larger the
number, the wider the tire.
@ Aspect ratio
Height/width ratio expressed as a
percentage.
@ Tire construction
R indicates a radial tire.
® Rim diameter
Size of the rim diameter in inches .
@ Load index and speed rating
The load index indicates the tire's
load-carrying capacity.
The speed rating indicates the
maximum permitted speed
¢ & in
W inter tires on page 250 .
"EXTRA LOAD", "xl" or "RF" indi­
cates that the tire is reinforced or
is an Extra Load tire.
Speed rat- Maximum permitted speed
ing
p
up to 93 mph (150 km/h)
Q up to 99 mph (160 km/h)
236
Speed rat- Maximum permitted speed
Ing
R up t o 106 mph (170 km/h)
s up to 110 mph (180 km/h)
T up to 118 mph (190 km/h)
u up to 124 mph (200 km/h)
H up to 130 mph (210 km/h)
V up to 149 mph (240 km/h)a>
z above 149 mph (240 km/h)a)
w up to 168 mph (270 km/h)a)
y up to 186 mph (300 km/h)a)
a) For tires above 149 mph (240 km/h),
tire manufacturers sometimes use the
code "ZR".
(J) US DOT number (TIN) and
manufacture date
The manufacture date is listed on
the tire sidewall (it may only ap­
pear on the inner side of the tire) :
DOT ... 4514 ...
means , for example, that the tire
was produced in the 45th week of
the year 2014.
@ Audi Original equipment
tires
Audi Original equipment tires
with the designation "AO" or "RO"
have been specially matched to
your Audi. When used correctly,
these tires meet the highest standards of safety and handling.
Your authorized Audi dealer will
be happy to provide more infor­
mation.

Wheels
Bead
means the part of the tire that is
made of steel wires, wrapped or
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 form ing 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 coup le of miles (kilo­
meters) at low speeds in the three
hour period before the tire pres­
sure is measured or adjusted .
Curb weight
means the weight of a motor ve­
hicle with standard equipment in­
cluding the maximum capacity of
fuel, oi l, and coolant , air condi ­
tioning and additional weight of optional equipment.
E x tra load tire
means a tire des igned to operate
at higher loads and at higher in-
238
flation pressures than the corre­
sponding standard tire . Extra load
tires may be identified as "XL",
"xl", "EXTRA LOAD", or "RF" on
the sidewall.
G ross A xle Weight Rating
("GAWR ")
means the load-carrying capacity
of a single 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 max imum load that a
tire is rated to carry for a given in­
flation pressure . You may not find
this information on all tires be­ cause it is not required by law.
Ma ximum load rating
means the load rating for a tire at
the maximum permissible infla­
tion pressure for that tire .
Maximum loaded vehicle
w eight
means the sum of: ...

Wheels
"XL" "xl" "EXTRA LOAD" or "RF" I I I
on the sidewal l.
Rim
means a metal support for a tire
or a tire and tube assembly upon
which the tire beads are seated .
Rim diameter
means nominal diameter of the
bead seat. If you change yo ur
wheel size , you w ill have to pur­
chase new tires to match the new rim diameter .
Rim size designation
means rim diameter and width.
Rim width
means nomina l distance between
rim flanges .
Sidewall
means that port ion o f a t ire be­
tween the tread and bead .
Speed rating (letter code)
means the speed at which a tire is
designed to be driven for extend ­
ed periods of t ime. The rat ings
range from 93 mph (150 km/h)
to 186 mph (298 km/h)
¢ table
on page 236 .
You may not find
this information on all tires be­
cause it is not required by la w.
240
The speed rating letter code ,
where applicable , is mo lded on
the tire sidewall and indicates the maximum permiss ible road
speeds
¢ .&. in Winter tires on
page 250.
Tire pressure monitoring
system*
means a system that detects
when one or mo re of a ve hic le's
tires are under inflated and illumi ­
na tes a low tire p ressu re warning
tellta le .
Tread
means that portion of a tire that
comes into contact w ith the road.
Tread separation
means pu lling away of the tread
from the t ire carcass.
Treadwear indicators (TWI)
means the projections wi thin the
principal grooves designed to give
a visua l indication of the deg rees
of wear of the tread . See
¢ page 244 , Treadwear indicator
for mo re information on measur­
ing t ire wear.

Wheels
Occupant loading and distri­
bution for veh icle normal load
for various designated seat ing
capacit ies
Refer to the tire inflation pressure
label
c:> page 245, fig . 207 for
the number of seating positions .
Refer to the table
c:> table on
page
247for the number of peo­
ple that correspond to the vehicle
normal load .
New tires or wheels
Audi recommends having all wo rk
on tires or wheels performed by
an authorized Audi dea ler or au­
thorized repair fac ility. These fa­
cilities have the proper knowledge
and are equipped with the re­
quired tools and replacement
parts.
.,. New tires do not yet have the
optimum adhesion properties. Drive carefully and at moderate
speeds fo r the first 350 miles
(500 km) with new tires .
.,. Use tires of t he same constr uc­
tion, size (rolling c ircumference)
and as close to the same tread pattern as possible on all four
wheels.
2 4 2
.,.Do not replace tires individ ually .
At least re place both t ires on the
same axle at the same time.
.,. A udi recommends that you use
Aud i O riginal equipment tires . If
you wo uld li ke to use different
tires, please note that the tires may perform d ifferently even if
they are the same s ize
c:> &. -
.,. If you would like to equip you r
vehic le with a tire/rim combina­
tion that is different from what
was installed at the facto ry, con ­
sult w ith an authorized Aud i
dealer or authorized repair facili­
ty be fore making a purchase
¢ .&_ .
The spare tire* is d ifferent from
the regular t ires installed on the
vehicle -for example, if winter
tires or wi de tires are installed -
then only use the spare tire* tem­
porar ily in case of emergency and
drive carefully while it is in use . It
s h o u ld be replaced w ith a regular
tire as soon as poss ib le.
On
all wheel drive ve hic les, all
four wheels must be equipped
w ith tires that are the same brand
and have the same construction
and tread pattern so that the
drive system is not damaged by

M N ai
"' ~
-"' "' N
"' .....
different tire speeds. For this rea­
son, in case of emergency, only
use a spare tire* that is the same
circumference as the regular tires.
A 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 6 years old when abso-
Wheels
lutely necessary and drive
carefully when doing so.
-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. 205 Tir e profi le : 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 repair facility
243
...

Wheels
and follow the important
safety precautions in
c::> page 247, Tires and vehicle
load limits.
-The tire must flex more if the
tire pressure is too low or if
the vehicle speed or load are
too high. This heats the tire up
too much. This increases the
risk of an accident because it
can cause the tire to burst and
result in loss of vehicle con­
trol.
-Incorrect tire pressure increas­
es tire wear and has a negative
effect on driving and braking
Tire pressure table
Please note that the information
contained in the following table
was correct at the time of print­
ing, and the information is sub­
ject to change. If there are differ­
ences between this information
and the tire pressures specified
on the label on the driver's side 8-pillar, always follow the specifica­
tion on the 8-pillar label
c::> page 245, fig. 206.
246
behavior, which increases the
risk of an accident.
(D Note
Replace lost valve caps to re­
duce the risk of damage to the
tire valves.
@ For the sake of the environment
Tire pressure that is too low in­
creases fuel consumption.
(D Tips
Audi recommends using the
tire pressure specified for a nor­
mal load
c::> table on page 247
or for a full load when the vehi­
cle is partially loaded.
Make sure that the tire designa­
tion on your tire matches the des­ ignation on the tire pressure label
and the tire pressure table.
The following table lists recom­
mended tire pressures in cold
tires according to the load and the size of the tires installed. .,.

Wheels
Quality grades can be found where applicable on
the tire side wall between t read sho ulder and
maximum sect ion w idth
c::> page 235, fig . 204.
For example: Tr ead wear 200 , Tract ion AA, Tem­
peratu re
A .
All passenger ca r tires must confo rm to Federal
Safety Req uiremen ts in add it ion to these grades.
Tread wear
The tread wear grade is a comparative rating
based on the wear rate of the tire when tested
unde r controlled conditions on a spec ified gov­
ernment test course.
For examp le, a t ire graded 150 would wear one
and one half ( 1 1/2) t imes as well on the govern­
ment course as a tire graded 100 .
The relat ive performance of t ires depends upon
the actua l conditions of their use, however, and
may depart significantly from the norm due to
variations i n driving hab its, service practices and
d iffe rences in road character istics and clima te.
Traction
The traction grades, from highest to lowest, are
AA, A , Band
C. Those grades represent the tire's
ab ility to stop on wet pavement as measu red u n­
de r controlled cond it ions on spec ified govern­
ment test su rfaces of asphalt and concrete. A tire
marked C may have poor traction performance
c::> &_ .
Temperature
The temperature grades are A (the highest), B,
a nd C, rep resent ing t he tire's res istance to the
genera tion of heat and its a bility to dis sipate
heat w hen tested unde r controlled cond itions on
a specified indoo r laboratory test whee l.
Sustained high temperature can cause the mate­ rial of the tire to degenerate and red uce tire life,
a nd excessive tempera ture can lead to sudden
tire failure
c::> &. .
The grade C co rresponds to a level of perform­
ance wh ich a ll passenge r ca r tires m ust meet un­
de r th e Federal Motor Vehicle Safety S tandard
No. 109. G rades Band A represent higher levels
252
of pe rformance on the laboratory test whee l than
the minimum required by law .
A WARNING -
The traction grade assigned to th is tire is
based on straight-ahead braking tract ion
tests, and does not include acce lerat ion, cor­
nering, hyd roplaning or peak traction charac­
teristics.
A WARNING
The temperature g rade for th is tire is estab­
lished for a tire that is properly inf lated and
n ot ove rloaded. Excess ive speed, underi nfla­
tion, o r ex cess ive lo adi ng, eithe r separately or
i n comb inat io n, can ca use heat bu ild up and
possible tire failure.
A WARNING
Tempe ratu re grades apply to ti res that are
properly inflated and not over or underinflat­
ed.
Tire pressure monitoring system
(l) General notes
App lies to vehicl es: wi th tire p ress ure mo nito rin g system
-
Each tire, incl uding the spare (if provided),
sho uld be checked monthly when co ld and inflat­
ed to the inflat ion pressure recommended by the
vehicle manufacturer on the vehicle placard or
tire inflat ion pressure label. (If your vehicle has
tires of a different s ize than the size indicated on
the ve hicle placard or t ire inflation pressu re la­
bel, you should dete rm ine the p roper t ire infla­
tion pressu re for those t ires).
As a n added safety feature, your ve hicle has been
equipped with a tire pressure mon itor ing system
( TP MS) that illum inates a low t ire pressure te ll-
ta le w hen o ne or mo re of yo ur ti res is sign ificant -
l y unde r-i nflated. According ly, w hen t he low t ire
pressure te lltale illuminates, you shou ld stop and
check yo ur tires as soon as possible, and inflate
them to the proper pressure . Dr iving on a signifi­
cant ly under-inf lated tire causes the t ire to over­
heat and can lead to tire failure. Under-inflation .,,.