2013 AUDI Q7 wheel size

conditions is impossible in all conceiva­
ble s ituations that may happen during
the useful life of your vehicle.
- The Advanced A irbag System can deploy
in accordance with the "low risk" opt ion
under the U.S. Federa l Standard if a child
that is heavier than the typical one-year
old child is on the front passenger seat
and the other cond itions for airbag de­
ployment are met.
- Acc ident statist ics have shown that chil­
dre n are generally safe r in the rea r seat
area than in the front se ating posit io n.
- For their own safety , all children, espe­
ci ally 1 2 yea rs and younger, sho uld al­
w ays ride in the ba ck p roperly restrained
f or their age and size .
Advanced front airbag system
Your vehicle is equipped w it h a front Advanced
Ai rbag System in compl iance with United
States Federal Motor Vehicle Safety Standard
208 as applicable at the time your vehicle was
manufactured.
The front Advanced Airbag System supp le ­
ments the safety belts to provide addit iona l
protection for the driver's and front passeng­
er's heads and upper bodies in frontal crashes.
The airbags inflate only in frontal impacts
when the vehicle decele rat io n is high enough .
The front Advanced Airbag System for the
fro nt seat occupants is not a substitute for
your safety belts . Rather, it is part of the over­
all occupant rest raint system in your veh icle .
A lways remember that the airbag system can
only help to pro te ct you, if you a re s itting up­
right, wearing yo ur safe ty be lt and wearing i t
p roperly. This is why you and yo ur passenge rs
must always be properly restrained, not just
beca use the law requires you to be.
The Advanced Airbag System in your veh icle
h as been cer tified to meet the " low r is k" re ­
q uir ements for 3 and 6 year -o ld children on
the passenger side and very small adu lts on
the dr iver side. The low risk dep loyment crite­
ria are intended to he lp red uce the risk of in-
A irbag system 189
jury through interaction with the front ai rbag
that can occur, for examp le, by being too
close to the steering wheel and instr ument
panel when the airbag inflates.
In add ition, the system has been certi fied to
comply with the "s uppression" requirements
of the Sa fety Standa rd, to turn off the front
airbag for infants 12 months old and younger
who are restrained on the front passenger
seat in child restraints that are listed in the
Standard
~ page 207, Child restraints and
Advanced Airbags .
"Suppression" requires the front a irbag on the
passenger s ide to be turned off if:
- a child up to abo ut one year o f age is re ­
strained on the front passenger seat in one
of the rear-fac ing or fo rward-facing infant
restrai nts listed in Federal Motor Vehicle
Safety Standa rd 208 with wh ich the Ad­
vanced Ai rbag System in your ve hicl e was
cert ified. Fo r a listing of the chi ld res traints
t h at were used to certify you r vehi cle's com­
pliance w it h t he US Sa fe ty Standard
~page 207,
-weigh t less than a thres ho ld level stored in
the control unit is de tected on the fron t pas ­
senger seat .
When a person is dete cted on t he front pas ­
senger se at, weigh ing more than the tota l
weight of a chi ld tha t is about 1 year old re ­
stra ined in one of the rear-facing or forward ­
facing infant restraints ( listed in Federal Mo­
tor Vehicle Safety Standard 208 w ith which
the Advanced Airbag System in you r vehicle
was certified), the front airbag on the passen­ ger side may or may not de ploy.
The
PASSENGER AIR BAG OFF light comes on
whe n the electro nic contro l unit detects a to­
ta l we ight on the front passe nger seat that re­
quires the front airbag to be tu rned off . If the
PASSENGER AIR BAG OFF light does no t
come on, the front ai rbag on t he passe nger
s ide has not been turned off by the cont ro l
u ni t an d can dep loy if t he con trol un it senses
an impact that meets the cond itions stored i n
its memory . ..,. •
•

206 Child Saf ety
- Always install rear-facing child safety
seats on the rear seat.
- If you must install a rearward facing
ch ild safety seat on the front passenger
seat in exceptiona l circumstances and
the
PAS SENGER AIR BA G OFF light does
not come on and stay on, immed iately
install the rear-facing child safety seat in
a rear seating posit ion and have the air­
bag system inspec ted immediately by
yo ur Audi dealer.
_& WARNING
If, in exceptional c ircumstances, you mus t
install a forward -facing child restra int on
the front passenger's seat:
- Always make su re the forward-fac ing
seat has been designed and certified by
its manufacturer for use on a front seat
with a passenger front and side airbag.
- Always follow the man ufacturer's in­
struct ions provided with the child safety
seat or carrier.
- Always move t he passenger seat into its
rearmost position in the seat 's fore and
aft adjustment range, as far away from
the a irbag as poss ible before installing
the ch ild restraint. The backrest must be
adjusted to an upr ight position .
- Always make sure that the
PASSENGER
AIR BAG OFF
light comes on and stays
on all the time whenever the ignition is
switched on.
(D Tips
Always rep lace child rest raints that were
installed in a vehicle during a crash. Dam­
age to a child rest raint that is not visible
could cause i t to fail i n another collisio n
si tua tion.
Advanced front airbag system and
children
Your veh icle is equipped with an "Advanced
A irbag System" in compliance w ith United
States Federal Motor Vehicle Safety Standard (FMVSS) 208 as applicable at the time you
r
vehicle was manufacture d.
T he Adv anced Airbag system in yo ur vehicle
has been certified to mee t the "low-risk" re­
quirements for 3-and 6-year old children on
the passenger side and sma ll adults on the
drive r side. The low r is k dep loyment cr iteria
are intended to red uce the risk of in jury
through interact ion w it h the airbag that can
occur, for example, by being too close to the
steering wheel and instrument panel when
the a irbag inflates . In addition, the syst em
has been ce rtified to comply wit h the "sup­
pression" re quirements o f th e Safety Sta nd­
ard, to t urn off the fron t airbag for infan ts up
to 12 months who are res trained on the front
passenger seat in child restraints that a re list­
ed in the Standard.
E ven though your veh icle is eq uipped wit h an
Advanced Airbag system , a ll children, espe­
cia lly those 12 years and yo unger, should a l­
ways ride in the back seat properly restrained
for their age and size. The airbag on the pas­
senger side makes the front seat a potentially
dangerous place for a ch ild to ride . The front
seat is not the safest p lace for a ch ild in a for­
ward-fac ing ch ild safety seat. It can be a ve ry
dange rous place fo r an infan t or a large r child
i n a rea rward-f acing se at.
Advanced Airbags and the weight­
sensing mat in the front seat
The Advanced A irbag System in your vehicle
detects the presence of an infant or child in a
c h ild restra int on the front passenge r seat us­
i ng the weig ht-sens ing mat in the seat cush ­
ion and the sensor be low th e safe ty belt latch
o n the front passenge r seat that measures t he
tens ion on the s afety be lt.
T he we ight -sensi ng mat measures total
we ight of t he chi ld and the ch ild safety seat
and a c hild b la nk et on the front passenger
seat. The we igh t on the fron t pa sse nger se at
is re late d t o the desig n of the ch ild res trai nt
and its "f ootprint", the s ize and shape o f the
bottom of the chi ld restraint as it sits on the .,..

-Never mount used tires on yo ur vehicle if
you are not sure of their "previous histo­
ry." Old used tires may have bee n dam­
aged even though the damage cannot be
seen that can lead to sudden tire failure
and loss of vehicle control.
Glossary of tire and loading terminology
Accessory weight
means the comb ined weight (in excess of
those standard items wh ich may be rep laced)
of automati c transmission, power steering,
power br akes, power wi ndows, power sea ts,
radio, and heater, to the ex tent that these
items are avai lab le as factory -installed equip­
ment (whether installed or not).
Aspect ratio
means the ratio of the height to the w idt h of
the tire in percent. Numbers of 55 or lower in ­
d icate a low sidewall fo r improved s teer ing re­
sponse and better overall handling on dry
pavement.
Bead
means the pa rt of the t ire that is made of
s teel wires, wrapped or re inforced by ply cor ds
and that is shaped to fit the r im.
Bead separation
means a b reakdown of the bond between
components in the bead.
Cord
means the strands forming the plies in the
tire.
Cold t ir e infl ation pr essure
means the tire pressure recommended by the
vehicle manufacturer for a t ire of a designated
size that has not been dr iven for more than a
couple of miles (kilometers) at low speeds in
the three hour period before the tire pressure i s measu red or adjusted.
Tire s an d wheel s 281
-If you notice un usua l vibration or if the
veh icle pulls to one side when driv ing, a l­
ways stop as soon as it is safe to do so and check the wheels and tires for dam­
age.
Curb weight
mea ns the weight of a motor ve hicle w ith
standard equipment includ ing t he maximum
capa city of fuel, o il, and coolant, ai r cond i­
tion ing a nd addi tional weig ht o f optiona l
equipment .
Extra load tire
means a tire design to operate at higher loads
and at higher inflation pressures than the cor­
respondi ng s tanda rd tire. Extra load tires may
be identified as "X L", "xl", "EXTRA LOAD", o r
"R F" on the sidewall .
Gross Axle Weight Rating ( "GAWR ")
mea ns the load-carrying capacity of a single
axle system, measured at the tire-ground in­
te rfaces.
Gross Vehicle Weight Rating ( "GVWR ")
means the maximum total loaded we ight of
t h e ve hicle.
Groo ve
means the space between two adjacent tread
ribs.
Load rating (code )
means the maximum load tha t a t ire is rated
to carry for a given inflation pressure. Yo u
may not find this information on all tires be­
ca use it is not required by law.
Maximum load rating
me ans the load r ating for a tire at the maxi­
mum pe rm issi ble inflat ion pressure for that
ti re .
•
•
...

282 Tires and wheels
Maximum loaded vehicle weight
means t he sum of:
(a) Curb weight
(b) Accessory weight
( c ) Vehicle capacity we ight, and
(d) P rod uction options weight
Maximum (permissible) inflation pressure
means t he max imum co ld in flation pressu re
to which a tire may be in flate d. Also called
"maxim um inflation p ress ure."
Normal occupant weight
means 150 lbs. (68 kilog rams) times the
nu mbe r of o ccupants seated in t he vehicle up
to the tot al sea ting capa cit y of yo ur vehicle .
Occupant distribution means dist ribution of occupants in a veh icle .
Outer diameter means t he overa ll diameter of a n inf lated new
tire.
Overall width
means t he linear dis tan ce between the ex ter i­
ors o f th e sidewalls of an inflated tire, in cl ud­
ing e levations due to labeling, decorations, or
p rotective bands o r ribs.
Ply
mea ns a laye r of r ubber- co ate d parall el c ords.
Production options weight
means t he comb ined we ight of those installed
regular produc tion options weigh ing ove r 5
l bs . (2 .3 kg) in excess of t hose standard items
which t hey repla ce, no t previously considered
in cur b weight o r acc essory weig ht, incl uding
h eavy duty brakes, r ide leve le rs, roof ra ck,
h eavy duty ba ttery, a nd specia l trim .
Radial ply tire
means a pneumatic t ire in whic h the p ly co rds
that ex tend to the beads are laid a t sub stan ­
ti ally 9 0 degrees to the ce nt erline o f the
tread . Recommended inflation pressure
see
~
page 281, C old tire infla tio n pressure.
Reinforced tire
means a t ire design to operate a t higher loads
and at h igher inflation pressures than t he cor­
r espondi ng stan da rd tire. Reinforce d tires
may be identifie d as "XL ", "xl ", "EX TRA LOAD",
o r "RF " on t he sidewa ll.
Rim
means a metal s upport for a tire or a t ire and
tu be assembly upon which the tire beads are
seated.
Rim diameter
means nom inal d iameter of the bead seat. If
you change your wheel s ize, you w ill have to
purch ase new tires to match th e new r im di­
ameter .
Rim size designation
means r im diamete r and width.
Rim width
means nom inal dista nce between rim flanges .
Sidewall
means tha t p ort ion of a t ire betw ee n t he
t read a nd bead.
Speed rating (letter code)
means the speed at which a tire is designed to
be driven for extended periods of time. The
r a ti ngs range from 93 mph ( 150 km/h) to
186 mph (298 km/h)
~ page 292 . Y o u may
not fi nd this informa tio n on all ti res because
it is no t re quir ed by law.
T he speed rating letter code, wh ere applica ­
ble , is molde d on the tire sidewall a nd indi­
c ates the max imu m permi ssibl e road spee ds
~ A in Winter tire s on page 296 .
Tire pressure monitoring system mea ns a system that detects when o ne or
more of a ve hicle 's tires are unde rinf lated an d
i lluminat es a low tir e pr essure w arning t ell-
tal e. ..,_

284 Tires and wheels
Cold tire inflation pressure
Tire pressure affects the overall handling, performance and safety of a vehicle .
I
4
t>
Fig. 251 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 (kPa), the interna·
tional measuring unit and in pounds per
square inch (PSI). Tire pressure is based in
part on the vehicle's design and load limit­
the greatest amount of weight that the vehi·
cle can carry safely and the tire size. The prop·
er 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 "cold " tire that counts.
Therefore, you should never let air out of a
warm tire to match "cold tire inflat ion pres­
sure" recommendations. The tires would then
be underinflated and could fail suddenly.
Maintaining proper tire pressure is one of the
most important things you can do to help
avoid sudden tire failure. Underinflated tires
are a major cause of sudden tire failure. Keep­
ing tires at the right pressure is also impor­
tant for safe and responsive vehicle handling,
traction, braking and load carrying .
Tire pres­
sures are particularly important when the
vehicle is being driven at higher speeds, and
then especially when heavily loaded even
within the permissible load -carrying capaci­
ties approved for your vehicle.
------------------..,;
•(=~: I : I :,.. I)@ ~
The~-----~---w-o- ....... -e.....i -·· - ­u ........ -.-..,.0, ... -....,.,...tot~---....... ._.,. -..
....
-..... ...........
- KPA. a PSI
- KPA.
a PSI
-KPA. a PSI
Fig. 252 Tir e pressure label
SU OWNER'S MANUAl FOR AD0"10NAL l10N VOl!ILEMANU£1. DU _,...,
POUR Pl.US DE
REHSEKi.\'IEME NTS
The recommended tire pressures for your Audi
depend on the kind of tires on your veh icle
and the number of passengers and/or amount
of luggage you will be transporting .
The tire pressure label is located on the driv­
er's side B-pillar . The tire pressure label lists
the recommended cold t ire inflation pressures
for the vehicle at its maximum capac ity
weight and tires that were on your veh icle at
the time it was manufactured.
If you wish to improve comfort when operat­
ing the vehicle at normal load (up to 3 occu­
pants), you can adjust tire pressures to those
specified for normal vehicle load. Before op­
erating the vehicle at maximum load, you
must increase the tire pressures to those
specified for maximum vehicle load
c::> .&,.
Bear in mind that the tire pressure mon itor ing
system can only monitor the tire pressures
you have stored. The system does not recog­
nize the load condition of your vehicle.
T he effectiveness of the tire pressure monitor­
ing system will be impaired if you store nor­
mal load pressures but then operate the vehi­
cle at its maximum load
c::> .&..
See the ill ustration c::> fig. 251 for the locat ion
of the label on driver's side B-pillar (color of
the actual label and exact locat ion on the ve­
hicle will vary slightly).
Note that the following table is accurate at
the time of going to press and is subject to

Tires an d wheel s 285
change. In the event of discrepancies, the tire
pressure label located on the driver's side 8-
p ill ar a lways takes precedence.
The table be low lists the recommended cold
tire inf lation pressures for the A udi model
I Model / Tire designation
covered by your Owner's Literature at the vehi­
cle's capacity weight and the tire sizes instal­
l ed on the respect ive models as orig inal
equipment, or as a factory option.
Tire pressure
Engine normal load condition full load condition
front rear front rear
I
PSI II kPA PSI kPA PSI j[ kPA PSI kPA
Q7:
3.0 liter
6-cy linder 2
55/5 5 Rl8 109H XL
All Sea son
265 /50 Rl9 ll0H XL
All Sea son
2 75/45 R20 ll0H XL
All S ea so n
275 /45 R20 110V XL
High Performance
295 /35 R21 10 7V XL
High Performance
35 240 35
35 240 35
35 240 35
35 240 35
36 250 35 240
44
300 49 340
240 44 300 49 340
240 44 300 49 340
•
240 44 300 49 340
I
240 44 300 49 340
XL= reinforced or extra load tire. It may als o appear as xl, EXTRA LOAD, or RF on the tire side­
wall.
The correct tire pressure for the spare wheel i s
l ocated on a label on the driver's side 8-pilla r.
Because technical changes may be made to
vehicle equ ipment during the model year, al­
ways compare the tire size designation on the
tire pressure label on your vehicle w ith the
tires on your vehicle. Ma ke sure that the tire
size information on the veh icle label is the
same as the s ize of the t ires on the vehicle.
This is especially important if the vehicle be­ l ongs to someone else or you bought the vehi­
cle with different rims/tires or you bought the
vehicle as a previously owned vehicle.
Remember, your safety and that of your pas­
sengers also depends on making sure that
l oad limits are not exceeded. Vehicle load in­
cludes everybody and everything in and on the
vehicle. These load limits are technically refer­ red to as the vehicle's Gross Vehicle We ight
Rating ("GVWR") . The Gross Axle Weight Rat­
i ng ("GAWR") is the maximum load that can
be appl ied at each of the veh icle's two axles.
The G ross Vehicle Weight Rating and the Gross Axle Weig
ht Rating are listed on the
safety compl iance sticker label located on the
drive r's side 8-pillar . The tire pressure labe l on
your A udi lists the maxim um combined
weight of all of the occ upants and luggage or
other cargo that t he vehicle can carry. Fo r the
location of the tire pressure label ¢
fig. 251.
A WARNING
Overloading a vehicle can cause loss of ve­
h icle control, a crash or other accident, se­
rious personal injury, and even death.
- Carrying more we ight than your veh icle
was des igned to carry will prevent the
veh icle from handling properly and in­
crease the risk of a loss of vehicle con­
trol.
- The brakes on a vehicle that has been overloaded may not be able to stop the
veh icle w ith in a safe distance.
- T ires on a vehicle that has been overload­
ed can fail suddenly caus ing loss of con-
trol and a crash. ..,.
•
•

2 90 Tires and wheels
Tire service life
The service life of tires depends on a lot of
different things including proper installation
and balancing, correct tire pressure and driv­
ing style.
F ig. 2 53 Tire tread: tread wea r ind icators (TWI)
F ig. 25 4 Rotat ing t ires for more even wear
Tr ead Wear Indicator (TWI)
The o rigi na l t ires on your veh icle have
1/16 inch (1.6 mm) high "wear indicators"
.... N M
c::> fig . 253 running across the tread. Depend ­
ing on the make, there will be six to eight of
them evenly p laced around the t ire. Marks on
the tire sidewa ll (for example "TWI" or other
symbols) indicate the positions of the tread
wear ind icators . Worn t ires must be replaced .
Different fig ures may apply in o ther countries
c::> & .
Tire p ressure
Incorrect tire pressure causes premature wear
a nd can cause sudden t ire blow-out. For t his
reason, tire pressure must be checked at least
once a month
c::> page 2 86.
Driving style
Driving fast aro und curves, heavy acce leration
and hard braking increase tire wear.
Rotating tires for more even wear
F or all four tires on your ve hicl e to h ave the
same service life, we recommen d that t he
front and rear t ires are rotated according to
the tire manufact urer's suggested tire rota­
tion intervals. Please remember the follow­ ing:
- Tire rotation intervals may differ from the
vehicle service inte rva ls o utlined in your
Warranty
& Maintenance booklet.
- The longer one tire is used in one location
on the vehicle, the more it wears at certain
points; therefore, we recommend that you
follow the tire manufact urer's suggested
tire rotation intervals .
- Vehi cles w ith front-wheel dr ive experience
more tread wear on the fro nt w heels com­
pa red to all-wheel drive (quattro ®).
- Please rotate tires as shown
c::> fig. 254.
-Extra care must be taken when rotating di-
rection-specific tires
c::> page 308.
Wheel balancing
The wheels on new ve hicles are balanced .
However, various situations during everyday
driving can cause them to become unba l­
anced, resulting in vibrat ions you can usually
feel through the steer ing wheel.
Un balanced whee ls must be rebalanced to
avo id excessive wear on steering, suspension
and t ires. A whee l m ust also be reba lanced
when a new tire is insta lled.
Incorrect wheel alignment
Incor rect w heel alig nment can cause exces ­
sive tire wear, impairing the safety of the vehi ­
cle . If tires show excessive wear, have the
whee l alignment checked by an aut horized
Audi dealer or qualif ied workshop .
All-wheel drive
Vehicles with q uattro ® mus t always have tires
of the same size, construction and tread type.
For details see
c::>page 231. ..,.

29 4 T ire s and wheel s
-All four wheels must be fitted with radia l
t ires of the same type, size (roll ing c ir­
cumference) and the same tread pattern.
Driv ing with different tires reduces veh i­
cle handling and can lead to a loss of
control.
- If the spare tire is not the same as the
t ir es that are mounted on the veh icle -
for example with wi nter tires - on ly use
the spare tire for a short period of time
and dr ive with extra care. Refit the no r­
ma l road whee l as soon as safely possi ­
ble.
- Never drive faster than the maxim um
speed for which the tires on your vehicle
are rated because tires that are drive n
faster than their rated speed can fail
sudden ly.
- Overloading ti res cause heat build- up,
sudden tire failure, including a blowout
and sudden deflation and loss of control.
- Temperature grades app ly to tires that
are properly inflated and not over or un­
derinflated.
- For technical reasons it is not a lways
poss ible to use wheels from other
vehicles -in some cases not even wheels
from the same vehicle model.
- If you install wheel tr im discs on the ve­
hicle whee ls, make sure that the air flow
to the brakes is not blocked . Reduced air­
flow to the brakes can them to overheat,
increasing stopping d istances and caus­
ing a collision.
- Run flat t ires may on ly be used on
vehicles that we re eq uipped w it h them
at the f acto ry. The vehicle must have a
chassis des igned for r un flat t ires . Incor­
rect use of run flat tires can lead to vehi­
cle damage or acc idents . Check with an
authorized Audi dealer or t ire specia list
to see if your vehicle can be equipped
with run flat t ires. If run flat tires are
used, they must be installed o n all four
wheels. Mix ing tire types is not permit­
ted. (D Note
- For technical reasons, it is not generally
poss ible to use the wheel rims from oth­
er veh icles. T his can hold tr ue for wheels
of the same vehicle type.
- If the spare tire is diffe rent from the
tires that you have mounted on your ve­
hicle (for example winter tires or wide
profi le tires), then use the spare tire for a
short period of time only and drive w ith
extra care. Replace the flat tire w it h the
ti re mat ching the othe rs on your vehicle
as soon as possi ble.
- Never d rive without the valve stem cap.
T he v alves co uld get damaged.
@ For the sake of the environment
Dispose of o ld tires in accordance w ith the
l ocal requirements.
Uniform tire quality grading
- Tread wear
- Tra ction AA A B (
- Temperature ABC
Quality grades can be found where applicab le
on the tire s ide wall between tread shoulder
and maximum section width
c> page 291,
fig . 255 .
For example: Tread wear 200 , Traction AA ,
Temperature A .
All passenger car ti res must conform to Feder­
al Safety Requirements in add ition to these
grades .
Tread wear
The tread wear g rade is a comparative rating
based on the wear rate of the tire when tested
u nder contro lled conditions o n a specified
government test course.
F o r example, a tire graded 150 wo uld wear
one and one ha lf (11/2) times as well on the
government course as a ti re graded 100.