Tires and wheels
Tires
General notes
Tires may be the least appreciated and most
abused parts of a motor vehicle .
Tires may be the least appreciated and most
abused parts of a motor vehicle . T ires are,
however, one of the most important parts of a
vehicle, particularly considering the compara
tively small patch of rubber on each tire that
assures that a ll- important contact between
you, you r vehicle and the road.
Maintaining the correct tire pressure, mak ing
sure that your vehicle and its tires do not have
to carry mo re weight than they can safely han
d le, avoiding damage from road hazards and
r eg ularly inspect ing t ires for damage i nclud
ing cuts, slashes irregu la r wear and ove rall
condition are the most important things that
you can do to he lp avoid s udden tire failure in
cluding tread separat ion and blowouts.
A voidin g damage
If yo u have to d rive over a curb or similar ob
stacle, drive very slow ly and as close as possi
b le at a right angle to the curb.
A lways keep chemicals incl ud ing grease, o il ,
gasoline and brake fluid off the t ires .
I nspect the t ires regularly for damage (cuts,
cracks or b listers, etc.). Remove any fo reign
bod ies embedde d in the treads.
Storing tires Mark tires when you remove them to indicate
the direction of rotation . T his ensures you to
be ab le to mount them correctly when you re
i nstall them .
When removed, the whee ls or t ires should be
sto red in a cool, d ry and preferably dark place .
Store tires in a vertical pos ition if they are not
mounted on r ims, in a horizontal pos it ion if
they are mounted on rims .
Tires an d wheel s 189
New tires
New ti res h ave to be broken in~& .
The tread depth of new t ires may vary, accord
ing to the type a nd make of t ire and the tread
patte rn.
H idden damage
Damage to tires and r ims is ofte n not readily
visible . If you notice unusual v ib rat ion or the
vehicle pulls to one s ide, th is may ind icate
that one of the t ires has been damaged . T he
ti res m ust be chec ked immed iate ly by an au
thorized Audi dea le r or q ua lified wor kshop .
Unidirectional tires
A un idirectional tire can be identified by ar
rows on the sidewa ll, that po int in the direc
tion the t ire is designed to rotate. You must
f ol low the specified di rection o f rotation . T his
is necessary so that these tires can develop
their optimum characteristics regarding grip,
road noise, wear and hydrop laning resistance.
For more information
~ page 216.
A WARNING
New tires or t ires that are o ld, worn or
damaged cannot provide maximum con
trol and braking ability .
-
-New tires tend to be slippery and must
be broken in. To reduce the r isk of losing
control, a co llision and ser ious personal
in ju ries, d rive with special ca re for the
fi rst 350 m iles ( 560 km).
- Driving with worn or damaged tires can
lead to loss of control, sudden tire fail
ure, including a blowout and sudden de
fl ation, cras hes and se riou s personal in
juries . Have wo rn or damaged t ires re
placed immediate ly.
- Ti res age even if they are not being used
and can fail sudden ly, especially at hig h
speeds. Tires that are more than 6 years
old can only be used in an emergency
and then w ith special care and at low
speed.
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202 Tir es and whee ls
The installation of replacement tires with
steel cord body plies in the tire sidewall may
cause ma lfunction of the tire pressure moni
toring system, and is not recommended (cord material information in molded on the tire
sidewall) .
Always check your tire pressure monitoring
system indicator after replacing one or more
tires on your vehicle. If the tire pressure moni
toring system indicator flashes, or is on, your
system is not work ing properly.
A WARNING
- Us ing incorrect or unmatched tires and/
or wheels or improper t ire and whee l
combinations can lead to loss of contro l,
co llision and serious persona l injury.
- Always use tires, rims and wheel bo lts
that meet the specifications of orig inal
factory-installed t ires or other combina
tions that have been specifically ap
proved by the vehicle manufacturer .
- Tires age even if they are not being used and can fail su ddenly, especially at high
speeds. Tires that are more than 6 years
o ld 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 a re 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.
- Only the wheel/tire s izes spec ified by the
manufactu rer may be used on veh icles
with all-wheel dr ive.
- Never drive faste r than the maxim um
speed for which the tires on your veh icle
are ra ted because tires that are driven
f aster than their rated speed can fail
sudden ly .
- Overloading ti res cause heat build-up,
sudden tire failure, incl uding a blowout
and sudden deflation and loss of control. -
Temperature grades apply to tires that
are properly inflated and not over or un
derinflated.
- For technical reasons it is not always
possible to use wheels from other vehi
cles -in some cases not even wheels
from the same veh icle model.
- Do not use run-flat tires on your vehicle.
Using run-flat t ires can lead to veh icle
damage or crashes .
@ Note
- For technical reasons, it is not generally
possible to use the wheel rims from oth
er veh icles . Th is can hold true for wheels
of the same vehicle type .
- If you should put different wheels and
tires on your veh icle (e.g . winter wheels
and tires), you must be certain that the
wheels and tires are compatible with the tire pressure monitoring system. Other
w ise the system will register a malfunc
tion and a fau lt message w ill be dis
played. For more information, contact
your authorized Audi dealer.
(D Note
- When installing new tires, be care ful not
to damage the va lves or tire pressure
monitoring system sensors.
- Never drive without the valve stem cap.
The va lves cou ld get damaged.
- If the sensors must be replaced, then
the valve must also be replaced at the
same time .
@ For the sake of the environment
Dispose of o ld tires in accordance with the
l ocal requirements .
@ Tips
Tires with the iden tificatio n "RO l" have
been specially matched with your A udi. We
r ecommend using on ly these tires because
they meet the highest standards regarding
safety and driving characteristics when used correctly . Your authorized Audi R8
dealer will g ladly provide you with more
information.
Uniform tire quality grading
- Tread wear
- Traction AA A B C
- T emperature ABC
Quality grades can be found where applicable
on the ti re side wa ll between tread shoulde r
and maximum section wid th ¢ page 199,
fig. 153 .
For example : Tread wear 200, Tract ion AA ,
Tempe ratu re A .
All passenger car tires must conform to Feder
al Safety Requi rements in addition to these
grad es.
Tread we ar
The tread wear grade is a comparative rating
based on the wear rate of the tire when tested
under controlled conditions on a spec ified
government test course.
For example, a t ire graded 150 would wear
one and one half (1 1/2) t imes as well on the
government course as a tire graded 100 .
The relat ive perform a nee of ti res depends
upon the actual conditions of their use, how
ever, and may depart sign ificantly from the
norm due to var iat ions in dr iv ing habits, serv
i ce practices and differences in road cha racter
i stics and climate.
Traction
The traction grades, from highest to lowest,
are AA, A, Band
C. Those grades represent the
tire's abil ity to stop on wet pavement as
measured unde r controlled cond it ions on
spec ified gove rnment test su rfaces of asphalt
and concrete . A tire ma rked C may h ave poor
tr action perfo rm ance¢ &..
Temp erature
The temperature grades are A (the h ighest),
B, and C, repr ese nting the t ire's resistance to
the gene rat io n of heat and i ts ab ility to dissi-
Tire s an d wheel s 203
pate heat when tested under controlled condi
tions on a specified indoor laboratory test
whee l.
Sustaine d high temperature can cause the
mater ia l of the tire to degenerate and red uce
tire life, and excessive tempe rat ure ca n lead
to s udden tire failure ¢ &. .
T he gr ade C correspon ds to a level of pe rform
ance which all passenger car tires must meet u nder the Federal Motor Vehicle Safety Stand
ard No . 109 . Grades Band A represent higher
l evels of performance on the laboratory test
whee l than the minimum requ ired by law.
A WARNING
The traction grade assigned to th is tire is
based on straight-ahead braking traction
tests, and does not include accele rat ion,
cor neri ng, hy droplaning or peak t ra ction
ch aracte rist ics.
A WARNING
T he temperature grade for this tire is es
tablished for a tire that is properly inf lated
and not overloaded . Excess ive speed, un
derinflation, or excessive loading, e it h er
separately or in combinat ion, can ca use
heat bui ldup and possible tire failure.
Winter tires
Winter tires con improve vehicle handling on
snow and ice. At temperatures below 45 °F (7 °C) we recommend changing to winter
tires.
In some heavy snow areas, local governments
may require true w inter or "snow" tires, those
with very deeply cut tread. T hese tires should
o nl y be used in pairs and be installed o n all
fou r wheels . Make sure you purchase snow
ti res that a re the same si ze and construction
type as the othe r ti res on you r vehicle.
If your vehicle is equipped w ith all-whee l
drive*, th is w ill improve traction during winter
driv ing, even with the s tanda rd tires . Howev-
er, we stro ngly recommend that you always ..,.
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