80B012721BA
Wheels
install the tires from the rear axle
on the front axle and vice versa.
This will allow the tires to have
approximately the same length of
service life.
For unidirectional tires, make sure
the tires are installed according to
the running direction indicated on
the tire sidewall > page 293.
Hidden damage
Damage to tires and rims can of-
ten occur in locations that are hid-
den. Unusual vibrations in the ve-
hicle or pulling to one side may
indicate that there is tire damage.
Reduce your speed immediately.
Check the tires for damage. If no
damage is visible from the out-
side, drive slowly and carefully to
the nearest authorized Audi deal-
er or authorized Audi Service Fa-
cility to have the vehicle inspect-
ed.
Z\ WARNING
Tread that has worn too low or
uneven tread depths on the
tires can reduce driving safety.
This can increase the risk of an
accident because it has a nega-
tive effect on handling, driving
through curves, and braking,
and because it increases the
risk of hydroplaning when driv-
ing through deep puddles.
Tire pressure
B4H-0664
Fig. 179 Driver's side B-pillar: tire pres-
sure label
B8K-1151
‘SEATING CAPACITY TOTAL FRONT NOMBRE DE PLACES TOTAL AVANT
SIZE COLD TIRE PRESSURE
DIMENSIONS | _ PRESSION DES PNEUS A FROID
as KPA, Ml PSI
a KPA, Ml PSI
am KPA, Hl PSI
ARRIERE
‘SPARE
DE SECOURS
Fig. 180 Tire pressure label
The correct tire pressure for tires
installed at the factory is listed on
a label. The label is located on the
B-pillar (driver's side) > fig. 179,
> fig. 180. The location may vary
depending on the model.
Use the tire pressure specified for
a normal vehicle load when the
vehicle is partially loaded > table
on page 273. If driving the vehi-
cle when fully loaded, you must
271
80B012721BA
Wheels
designation on the tire pressure tires according to the load and
label and the tire pressure table. the size of the tires installed.
The following table lists recom-
mended tire pressures in cold
Q5: 255/45R20101W| 29 | 200 | 29 | 200 | 32 | 220] 35 | 240
2.0L 235/55R19101H | 29 200 | 29 | 200 | 33 | 230 | 36 | 250
4-cylinder
255/45 R20 101H 29 200 29 200 33 230 36 250
235/60 R18 103H 29 200 29 200 35 240 38 260
255/40 R21 102Y 32 220 32 220 32 220 35 240
Q5 TFSI e: Steel suspension 30 210 30 210 33 230 36 250
2.0L 235/60 R18 103H
4-cylinder Steel suspension 30 | 210 | 30 | 210 | 33 | 230 | 36 | 250
255/45 R20 101W
Steel suspension 30 | 210 | 30 | 210 | 35 | 240) 38 | 260
235/55 R19 101H
Steel suspension 30 210 30 210 35 240 38 260
255/45 R20 101H
Air suspension 30 | 210 | 30 | 210 | 38 | 260 | 41 | 280
255/45 R20 101W
Air suspension 30 | 210 | 30 | 210 | 38 | 260] 41 | 280
235/55 R19 101H
Air suspension 30 210 30 210 38 260 41 280
255/45 R20 101H
SQs: Steel suspension 33 230 33 230 36 250 39 270
3.0L 255/40 R21 102Y
6-cylinder Air suspension 33 | 230 | 33 | 230 | 39 | 270 | 42 | 290
255/40 R21 102Y
255/45 R20101W | 36 250 33 230 41 280 44 300
Steel suspension 33 230 30 210 36 250 36 250
255/45 R20 101H
Air suspension 33 230 30 210 39 270 39 270
255/45 R20 101H
a) Two people in the front, one person in the rear
273
Wheels
All passenger car tires must conform to Federal
Safety Requirements in addition to these grades.
Tread wear
The tread wear grade is a comparative rating
based on the wear rate of the tire when tested
under controlled conditions on a specified gov-
ernment test course.
For example, a tire graded 150 would wear one
and one half (1 1/2) times as well on the govern-
ment course as a tire graded 100.
The relative performance of tires depends upon
the actual conditions of their use, however, and
may depart significantly from the norm due to
variations in driving habits, service practices and
differences in road characteristics and climate.
Traction
The traction grades, from highest to lowest, are
AA, A, B and C. Those grades represent the tire's
ability to stop on wet pavement as measured un-
der controlled conditions on specified govern-
ment test surfaces of asphalt and concrete. A tire
marked C may have poor traction performance
>A.
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 dissipate
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 reduce tire life,
and excessive temperature can lead to sudden
tire failure > A.
The grade C corresponds to a level of perform-
ance which all passenger car tires must meet un-
der the Federal Motor Vehicle Safety Standard
No. 109. Grades B and A represent higher levels
of performance on the laboratory test wheel than
the minimum required by law.
Z\ WARNING
The traction grade assigned to this tire is
based on straight-ahead braking traction
278
tests, and does not include acceleration, cor-
nering, hydroplaning or peak traction charac-
teristics.
Z\ WARNING
The temperature grade for this tire is estab-
lished for a tire that is properly inflated and
not overloaded. Excessive speed, underinfla-
tion, or excessive loading, either separately or
in combination, can cause heat buildup and
possible tire failure.
ZA WARNING
Temperature grades apply to tires that are
properly inflated and not over or underinflat-
ed.
Tire pressure monitoring
system
(1) General notes
Each tire, including the spare (if provided),
should be checked monthly when cold and inflat-
ed to the inflation pressure recommended by the
vehicle manufacturer on the vehicle placard or
tire inflation pressure label. (If your vehicle has
tires of a different size than the size indicated on
the vehicle placard or tire inflation pressure la-
bel, you should determine the proper tire infla-
tion pressure for those tires).
As an added safety feature, your vehicle has been
equipped with a tire pressure monitoring system
(TPMS) that illuminates a Low tire pressure tell-
tale when one or more of your tires is significant-
ly under-inflated. Accordingly, when the low tire
pressure telltale illuminates, you should stop and
check your tires as soon as possible, and inflate
them to the proper pressure. Driving on a signifi-
cantly under-inflated tire causes the tire to over-
heat and can lead to tire failure. Under-inflation
also reduces fuel efficiency and tire tread life,
and may affect the vehicle's handling and stop-
ping ability.
Please note that the TPMS is not a substitute for
proper tire maintenance, and it is the driver's re-
sponsibility to maintain correct tire pressure, >
