2013 AUDI Q7 brakes

288 Tires and wheels
Tires and vehicle load limits
There are limits to the amount of load or
weight that any veh icle and any t ire can carry.
A vehicle that is overloaded wi ll not handle
well and is more difficult to stop. Overload ing
can not on ly lead to loss of vehicle control
,
but can a lso damage important parts of the
vehicle and can lead to sudden tire failure in-
,
eluding a blowout and sudden deflation that
can cause the vehicle to crash .
Your safety and that of your passengers a lso
depends on making sure that load limits are
not exceeded. Vehicle load includes everybody
and everyth ing in and on the vehicle . These
load limits are tech nically referred to as the
vehicle's
Gross Vehicle Weight Rating
("GVWR").
The "GVWR" includes the we ight of the basic
vehicle, all factory installed accessories , a full
tank of fuel , oi l, coo lant and other fluids plus
maximum load. The maxim um load includes
the number of passengers that the vehicle is intended to carry ("seating capacity") with an
assumed weight of 150 lbs (68 kg) for each
passenger at a designated seating position
and the tota l weight of any l uggage in the ve­
hicle. If you tow a trailer, the weight of the
trailer hitch and the tongue weight of the
loaded trailer must be included as part of the
veh icle load .
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 st icker label located on the
driver's side B -pillar. Your Audi has 5 seating
positions, 2 in the front and 3 in the rear for
total seating capacity of 5. On vehicles w ith
six seats*, your veh icle has two front seats,
two seats in the second row seating and two
seats in the third row seating. On vehicles
with seven seats*, your vehicle has two front
seats, three seats in the second row seating
and two seats in the third row seating . Each seating
position has a seat belt
q page 175,
Safety belts .
The fact that there is an upper limit to your
vehicle's Gross Vehicle Weight Rating means
that the total weight of whatever is being car­
ried in the vehicle (including the weight of a
trailer hitch and the tongue weight of the
loaded trailer) is lim ited. The more passen­
gers in the vehicle or passengers who are
heavier than the standard we ights assumed
mean that less weight can be carr ied as lug­
gage .
The tire pressure label on your Audi also 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
label
q page 284, fig. 251.
_& WARNING
Overloading a vehicle can cause loss of ve­
h icl e control, a crash or other accident, se­
rious personal injury, and even death.
- Carrying more weight than your vehicle
was designed to carry will prevent the
vehicle from handling properly and in­
crease the risk of the 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.
- Tires on a vehicle that has been over load­
ed can fail suddenly, including a blowout
and sudden deflation, causing loss of
control and a crash .
- Always make sure that the total load be­
ing transported -including the weight of
a trailer hitch and the tongue we ight of a
loaded trailer -does not make the vehi­
cle heavier than the vehicle's Gross Vehi­
cle Weight Rating.
Determining correct load limit
Use the example below to cal­
culate the total weight of the
passengers and luggage or

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.

332 Index
How does moisture or road salt affect the
brakes? .................... ..... . 228
Malfunction .............. ... .... .. 32
Parking brake ............ .. .. .... . 109
Warning/indicator lights ... .. .. .... .. 19
Worn brake pads symbol ....... .. .... 36
Braking guard
refer to Audi braking guard .......... 127
Break-in period ............ .. .. .... . 234
Brake pads ............ .. .... .. .. . 234
Tires .... .. ................ ..... . 234
Breakover angle .. .. ........ ... .. .. . 238
Bulbs ... .. .. ..................... . 312
Bumper cover Caution when parking near a parking bar-rier or curb ............... ... .... . 110
C
California Proposition 65 Warning .. .. . 265
Battery specific .............. .... . 277
Capacities ... ... .... ...... .. .. .. .. . 322
Car -Systems
Ambience lighting . . . . . . . . . . . . . . . . . . 62
Lighting profiles ............ .. .... .. 62
Car care ..... ................ ..... . 245
Interior . . . . . . . . . . . . . . . . . . . . . . . . . . 251
Plastic and vinyl ................ .. . 248
Care of exterior ............ .. .. .. .. . 245
Cargo area
refer to Loading the luggage compart-
ment .. .. .. ... .... ...... .. .. .. .. . 171
Cargo floor .. ............. .. .. .. .. .. 82
Cargo net .... ... .......... .. .. .. .. .. 80
Catalytic converter ... ...... .. .. .. .. . 235
Center armrest Cup holder . . . . . . . . . . . . . . . . . . . . . . . . 77
Storage compartment . . . . . . . . . . . . . . . 77
Center console in rear ..... .. .. .. .. .. . . 78
Central locking Emergency locking .. ...... .. .. .. .. . . 45
Panoramic slid ing sunroof .. .. .. .. .. . . 55
Certification .............. .. .. .. .. . 328
Changing a flat tire .......... ... .... . 304
Changing a wheel .............. .. ... 304
Changing engine oil ......... .... ... . 270 Chassis
Undercoating
also refer to Adaptive Air Suspen- 250
sion . . . . . . . . . . . . . . . . . . . . . . . . 155, 157
CHECK button ..... ................. . 12
Checking Engine coolant level . ............ ... 272
Checking tire pressure ........... .... 286
Child restraints
Danger of using child restraints in the
front seat . . . . . . . . . . . . . . . . . . . . . . . . 186
Where can I get additional information
about child restraints and their use? .. 224
Child restraint system anchors .... .. .. 218
Child safety ..... .. .......... ... .. .. 205
Convertible locking retractor ... .. .. .. 215
Guidance fixtures for lower anchorages 220
Important safety instructions for using
child safety seats . ............. .. .. 208
Important things to know when driving
with children .... ................ . 205
Installing a child restraint using the
LATCH system .. .. ............. .. .. 221
Mounting and releasing the anchorage
hook . .... .... ................... 221
Tether anchors . .. .......... ... .. .. 222
Tether straps . ... ....... ...... .. .. 222
Child safety lock
rear doors (power) .. ........... .... . 48
Child safety seat Unused safety belts on the rear seat . . 210
Child safety seats .. ..... ..... ... .. .. 211
Booster seats ................. .... 213
Convertib le child seats ............. 212
Convertible locking retractor ......... 215
Danger of using child restraints in the
front seat ..... .. ................ . 186
How do I properly install a child safety
seat in my vehicle? ............... .. 208
Infant seats .................. .... 211
Installing ... .. .. ....... ...... .. .. 215
LATCH system .. .. ... ......... ... .. 221
Safety instructions ... .. ..... ... .. .. 208
Child seats Lower anchorages ............. .... 219