A WARNING
Sudden tire failure can lead to loss of con
trol, a crash and serious personal injury!
- Never drive a vehicle when the tread on
any tire is worn down to the wear indica
tors.
- Worn tires are a safety hazard, they do
not grip well on wet roads and increase
your risk of "hydroplaning" and loss of
control.
- Always keep chemicals that can cause
tire damage, such as grease, oil, gasoline
and brake fluid away from t ires.
- Tires age even if they are not be ing used
and can fail suddenly, especially at high
speeds . Tir es that are more than 6 years
old can only be used in an emergency
and then with special care and at lower
speeds.
- Never mount used tires on your vehicle if
you are not sure of their" previous histo
ry ." Old used tires may have been dam
aged even though the damage cannot be
seen that can lead to sudden tire failure
and loss of vehicle control.
Tires and wheels 233
New tires and replacing tires and wheels
New tires and wheels have to be broken in .
Fig. 189 Tir e specificat ion codes on t he s idewall o f a
tire
No. Description
CD Passenger car tire (where applicable)
@ Nominal width of tire in millimeters
® Ratio of height to width (aspect ratio)
© Radial
® Rim diameter code
® Load index and speed rat ing
(f) U.S. DOT tire identification number
® Audi Original tire
® Sever snow conditions
@ Tire ply composition and materials
used
@ Maximum load rating
@ Treadwear, traction and temperature
grades
@ Maximum permissible inflation pres-
sure
The tires and rims are essential parts of the
vehicle's design . The ti res and rims approved
by Audi are spec ially matched to the charac
teristics of the vehicle and can make a major .,.
•
234 Tire s and wheel s
contribution to good road ho lding and safe
handling when in good condition and properly
inflated
¢ ,& .
We recommend that all work on tires and
wheels be perfo rmed by an authorized Audi
dea ler. They are familiar with recommended
proced ures and have the necessary spec ial
too ls and spare parts as well as the proper fa
cilities for disposing of the old tires.
Authorized Audi dealers have the necessary information about techn ica l requ irements for
installing or changing tires and r ims.
Re placing t ires and whe els
Tires sho uld be rep laced at least in pairs and
not individua lly (for examp le both front tires
or both rear tires together).
Be sure to read and heed the information to
the tire pressure monitoring system*
¢page 240.
A lways buy rep lacement radial tires that have
the same specifications as the tires approved
for your vehicle by Audi. Replacement t ires
must always have the same load rating speci
fication as the original equipment or approved
optional tires listed in the table
c:> page 226.
Aud i-approved specification ti res are specially
matched to your vehicle and its load limits,
and can contribute to the important road ho ld
ing, driving characteristics, and safety of the
vehicle. The table (c:>page 226) lists spec ifica
tions of the tires approved for the Audi mod
els covered by your Owner's Literature .
The tire pressure labe l located on driver's side
B-pillar (c:>page 226, fig. 186) lists the speci
f ications of the orig inal equipment tires in
stalled on your veh icle at the time it was man
ufactured.
Federal law requires t ire manufacturers to
p lace standard ized information on the s ide
wall of all tires c:>fig. 189. This information
i dent ifies and describes the fundamental
characterist ics, the quality grade of the tire
and a lso provides a tire ident ificat ion number f
or sa fety standard ce rtification and in case of
a reca ll.
Tire specifications
Knowledge of ti re specificat ions makes it eas
ier to choose the correct tires. Radial ti res
have the tire specifications marked on the
sidewa ll, for examp le:
P2 65 / 35 R1 9 98Y XL
This co nta ins the following information:
P Indicates the t ire is for passenger cars
(where app licab le)
2 65 Nominal tire width in mm of the tire
from sidewall edge to sidewa ll edge. In
general, the larger the number, the wider
the tire
35 Height/w idth ratio in percent (aspect ra-
t io)
R Tire construction: Radial
1 9 Rim diameter code (in inches)
98 Load rating code
Y Speed rat ing letter code
X L (or "xl", "EXTRA LOAD", or "RF" Indicates
t h at the t ire is a"Re inforced" or an " Extra
Load " tir e
M+S (or "M/S") Indicates that the tire has
some mud and snow capabi lity
The tires could also have the information of
direction of rotat io n
c:> page 222 .
Tire manufacturing date
The manufact uring date is also indicated on
the tire sidewall (possibly on ly on the inner
s ide of the wheel) :
"DOT ... 2212 ... "means, for examp le, that
the tire was produced in the 22nd week of 2012.
Speed rating (letter c ode)
The speed rating letter code on the whee ls in
dicates the maximum permissible road speeds
c:> & in Winter tires on page 238 .
P up to 93 mph (150 km/h)
Q u p to 99 mp h (158 km/h)
R up to 106 mph ( 170 km/h)
Wheel bolts
Wheel bolts must always be tightened to the
correct torque .
The design of wheel bolts is matched to the
factory installed r ims. If differen t rims are fit
ted, the correct wheel bolts with the right l ength and correctly shaped bolt heads must
be used. This ensures that wheels are fitted
securely and that the brake system functions
correctly .
In certain circumstances, you may not use
wheel bo lts from a different vehicle -eve n if it
i s the same model
¢ page 266.
_&. WARNING
Improperly tig htened or maintained whee l
bolts can become loose ca using loss of
contro l, a co llision and serious persona l in
jury.
- Always keep the wheel bolts and the threads in the wheel hubs clean so the
whee l bolts can turn easily and be prop
erly t ightened.
- Never grease or oil the wheel bo lts and
the threads in the wheel hubs. They can become loose wh ile driving if greased or
o iled, even if tightened to the specif ied
torque .
- Only use wheel bolts that belong to the
rim being installed.
- Never use different whee ls bolts on your
vehicle .
-Always maintain the correct tighten ing
torque for the wheel bo lts to reduce the
risk of a wheel loss . If the tightening tor
que of the wheel bolts is too low, they
can loosen and come out when the vehi
cl e is moving.
If the tightening torque is
too high, the whee l bolts and threads
can be damaged and the wheel can be
come loose.
Q;) Note
The spec ified torque fo r the wheel bo lts is
90 ft lbs. (120 Nm) with a tolerance of
± 7,4 ft lbs.(± 10 Nm). Torque wheel bo lts
Tire s an d wheel s 239
diagonally. After changing a wheel, the
torque m ust be checked as soon as possi
ble with a torque wrench -preferably by an
a uthori zed Audi dea ler or qualified work
shop.
Low aspect ratio tires
Your Aud i is factory -equ ipped w ith low aspect
ratio tires . These tires have been tho roughly
tested and been se lected specifically fo r your
model for their superb perfo rmance, road fee l
and hand ling under a var iety o f driving cond i
tions. Ask your authorized Audi dealer for
more details .
T he low aspect ratio of these t ires is ind icated
by a numeral of
55 or l ess in the tire's s ize
designation. The numera l rep resents the ra tio
of the tire's sidewa ll height in relation to its
tread width expressed in percentage . Conven
tiona l tires have a he ight/w idth ratio of 60 or
more.
T he performance of low-a spe ct- ra tio tire s is
p ar tic ul ar ly se nsi tiv e to i mprop er i nfl ation
pre ssure. It is the refo re important that low
a spect ratio t ires are inflated to the specified
pr ess ure and that th e inflation pr essur e is
r e gula rly ch ecked and maintain ed. Tir e pre s
s ure s should b e check ed at l east once a
m onth and alwa ys befo re a long trip
¢ page 228, Checking tire pressure.
What you c an do to avo id tire and rim
damage
Low aspect ratio tires can be damaged mo re
easily by impact w ith potholes, curbs, g ull ies
o r ridges on the road, pa rticularly if the tire is
u nderinflated.
In orde r to minimize the occurrence of impact
damage to the tires of your vehicle, we recom
mend that you observe the following p reca u
tions:
- Always ma inta in recommended inflation
pressu res. Check your tire pressure eve ry
2,000 miles (3,000 km) and add air if neces-
sary . .., •
•
Data
450 hp, 4.2Liter 8-cyl. engine
Engine data
Maximum output SAE net
Maximum torque SAE net
No. of cylinders
Displacement
Stroke
Bore
Compression ratio hp@rpm
lb-ft@rpm
C[D (cm
3
)
in (mm)
in (mm) 450 @8250
316 @4000-6000
8
254 (4163)
3.65 (92.8)
3 .36 (84.5)
12.5: 1
Data
Fuel Premium unleaded Recommended for maximum
engine performance. Further details
¢page 202,
Gasoline
Dimensions (approx.)
Length (with licence plate bracket)
Width (with outside mirrors folded) Height (unloaded)
Turning circle diameter (curb to curb)
Capacities (appro x.)
Fuel tank
- Total capacity
-Reserve (of total capacity) in (mm)
in (mm)
in (mm)
ft (m)
Windshield and headlight* washer fluid container
Engine oil
with filter change 183.0
(4649)
73.2 (1860)
54.3 (1380)
37.4 (11.4)
gal (liters) 16.1 (61.0)
gal (liters) 1.8-2.4
(7-9)
quarts (liters) 4.8 (4.5)
quarts (liters) 10.2 (9.7)
263
•
•