24 0 T ire s and wheel s
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 . Tires are,
however, one of the most important parts of a
vehicle, particularly considering the compara
tive ly small patch of rubber on each tire that
assures that all -impo rtant contact between
you, your 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 safe ly han
d le, avoiding damage from road hazards and
reg ularly inspecting t ires for damage includ
ing cuts, slashes irregu la r wear and ove rall
condition are the most important things that
you can do to he lp avoid sudden tire failure in
cluding tread separation and blowouts.
A voidin g damage
I f you have to drive over a curb or similar ob
stacle, drive very s low ly and as close as possi
b le at a right angle to the curb.
A lways keep chem ica ls includ ing grease, o il,
gasoline and b rake fluid off the ti res.
Inspect the t ires regularly for damage (cuts,
cracks or b listers, etc.). Remove any fo reign
bod ies embedded in the treads.
St oring tires
Mark tires when you remove them to indicate
the direction of rotation . Th is ensures you to
be ab le to mount them correctly when you re
install t hem.
When removed, the wheels or t ires should be
stored in a cool, dry and preferably dark place .
Store tires in a vertical pos ition if they are not
mounted on rims, in a horizontal pos it ion if
they are mounted on rims. New tire
s
New t ires have to be broken in¢&,. .
T he tread depth of new t ires may vary, accord
ing to the type a nd make of t ire and the tread
pa tte rn .
Hidden damage
Damage to tires and r ims is often not readily
vis ible . If you notice unusual v ibrat ion or the
vehicle p ulls to one side, th is may ind icate
that one of the t ires has been damaged . Th e
t ir es m ust be checked immed iate ly by an au
tho rized Aud i dea le r or q uali fied wor kshop.
Unidirectional t ires
A un idirectional tire can be identified by ar
rows on the sidewa ll, that po int in the direc
t ion the t ire is designed to rotate. You must
fol low the specified d irection of rotation . This
is necessary so that these tires can develop
their optimum characteristics regarding grip, road no ise, wear and hydrop laning resistance.
For more information ¢
page 268.
A WARNING
-New tires or tires that are old, 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 risk of losing
control, a co llision and ser ious personal
in jur ies, d rive w ith special ca re fo r 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 blowou t and sudden de
fl ation, c rashes and seriou s personal in
juries . Have wo rn or damaged t ires re
p laced immediate ly .
- T ires age even if they are not being used
and can fai l sudden ly, especially at high
speeds. Tires that are more than 6 years
old can only be used in an emergency
and then w ith specia l care and at low
speed.
-Never mount used tires on yo ur vehicle if
yo u 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.
- If you notice unusual vibration or if the
vehicle pulls to one side when d riving, al
ways stop as soon as it is safe to do so
and check the wheels and tires for dam
age .
(D Note
Please note that summe r and wi nte r tires
are designed for the cond itions that are
Glossary of tire and loading terminology
Accessory weight means the comb ined weight (in excess of
those sta ndard items which may be rep laced)
of au toma tic transmission, power steer ing ,
power brakes, power windows, power seats,
radio, and heater, to the extent that these
items are availab le as factory-installed equip
ment (whether installed or not) .
Aspect ratio
means the rat io o f the height to the w idth of
the tire in percent . Numbers of 55 or lower in
dicate a low sidewall for improved steering re
sponse and better overa ll handling on dry
pavement .
Bead
means the part of the t ire t hat is made o f
steel wires, wrapped or reinforced by ply cords
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.
Tire s an d wheel s 241
typica l in those seasons . Aud i recommends
using winter tires during the winter
months . Low temperatures signif icant ly
dec rease the e lasticity of summer t ires,
which affects tract ion and brak ing ability.
If summer t ires are used i n very co ld tem
peratures, cracks ca n form o n the tread
bars , res ulting in perma nen t tire damage
that can cause loud driving noise and un
bala nced ti re s. Audi i s not respon sible for
th is type of damage .
Cold tire inflation pressure
means the t ire p ress ure recommended by t he
vehicle manufacture r fo r a tire o f a des ignated
s ize t hat has not bee n driven for more than a
coup le o f miles (k ilometers) at low speeds in
the three hour period before the tire press ure
is m easured or adjusted.
Curb weight
me ans the we ight of a motor ve hicle with
st andard equipmen t incl ud ing the max imum
capacity of fuel, oi l, and coolant, air condi
tioning and additional weig ht of optiona l
equipment.
Extra load tire
means a t ire design to oper ate a t higher load s
and at higher inflation pressures than the cor
responding standa rd tire . Extra load tires may
be identified as "XL", "x l", "EXTRA LOAD", o r
"RF" on the sidewal l.
Gross Axle Weight Rating ("GAWR")
me ans the load-ca rry ing capac ity of a single
axle system , measured at the tire -ground in
te rfaces.
Gross Vehicle Weight Rating ( "GVWR ")
mea ns the maximum total loaded we ight of
the ve hicl e. .,..
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Unbalanced whee ls must be rebalanced to
avoid excessive wea r on steering, suspension
and tires. A wheel must a lso be rebalanced
when a new tire is installed .
Incorrect wheel alignment
Incorrect whee l alignment can cause exces
sive tire wear, impairing the safety o f the vehi
cle. If tires show excess ive wear, have the
wheel alignment checked by an authorized
Audi dealer or qualified workshop .
All-wheel d rive
Vehicles w ith quattro ® must always have tires
of the same size, construction and tread type .
F or detai ls see
r=!:> page 196 .
A WARNING
Sudden tire failure can lead to loss of con
trol, a crash and serious persona l injury!
- Never drive a veh icle 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"hydrop lan ing" and loss of
co ntrol.
- Always keep chemicals that can cause
tire damage, such as grease, oil , gasoline
and brake fluid away from t ires.
- Tires age eve n if they are not be ing used
and can fail suddenly, especially at high
speeds. T ires that are more than 6 years
o ld can only be used in an emergency
and then with spe cial care a nd at lower
s peeds.
- Never mount used ti res on yo ur vehicle if
yo u a re not s ure of their "prev ious histo
ry." Old used ti res may have been dam
aged even though the damage cannot be
seen that can lead to s udden tire failure
and loss of vehicle control. Tires and wheels 251
New tires and replacing tires and wheels
New tires and wheels have to be broken in
.
Fig. 19 5 Tir e spec ificat io n codes on t he s idewall o f a
tire
No. De sc ription
CD Passenger car tire (where applicable)
@ Nomina l w idth of t ire in mill imeters
® Ratio of height to width (aspect ratio)
© Rad ial
® Rim diameter code
® Load index and speed rating
(f) U.S. DOT tire identification number
® Aud i Origina l tire
® Sever snow conditions
@ T ire ply composition and mater ials
used
@ Maximum load rating
@ Treadwear, traction and temperat ure
grades
@ Maximum permissible inflation pres-
sure
T he tires and rims are essential parts o f the
vehicle's design . The ti res and rims app roved
by Audi a re spec ia lly matched to the charac
teris tic s of the ve hicl e and can m ake a major .,.
•
V up to 149 mph (240 km/h)1
)
Z over 149 mph (240 km/h)1)
W up to 168 mph (270 km/h)1l
Y up to 186 mph (298 km/h)
1 )
Your veh icle is norma lly factory equipped with
t ires, which posses s excellen t driving charac
ter istics and give your Audi opt imum driving
comfort . An electronic speed limiter
~ page 30 w ill normally prevent your vehicle
from go ing faste r th an the tire speed rating
~ &. -
U.S. DOT T ire Identification Number (TIN )
and tire manufactur e date
This is the t ire's "serial numbe r" . It begins
with the le tters "DOT" and indicates that the
tire meets all federal standards . The next two
numbers or letters indicate the p lant where it
was manufactured, and the last four numbers represent the week and year of manufactu re.
Fo r example, the numbers 2212 mean the tire
was produced in the 22nd week of 2012. The
other numbers are market ing codes that may
or may not be used by the t ire manufacturer.
This informat ion is used to contact consumers
if a t ire defect requires a reca ll.
Audi Original tire
Tires with the iden tifica tion "AO" or "RO" have
been spec ially matched with your Aud i. We
recommend using only these tires because
they meet the highest standards regard ing
safety and d riving charac ter istics when used
correctly . Yo ur au thori zed Audi dealer w ill
g lad ly provide you with more information.
Tire ply composition and materials used
The numbe r of p lies ind icates the n umber of
l ayers of rubber-coated fabric i n the t ire. In
gener al, the grea ter the numbe r of p lies, the
more weig ht a tire can s upport. Tire man ufac
turers a lso must indicate the materials in the
tire, wh ich include ste el, nylon, polyest er, and
others.
ll Fo r tires wit h a m ax im um s pee d ca pabil ity over
1 4 9 m ph (24 0 k m/h) , tire m an ufa ctur ers somet ime s
use the let ters "ZR."
Tire s an d wheel s 253
Maximum Load Rating
This number indicates the max imum load in
k ilograms and po unds t hat can be ca rr ied by
the tire.
Tire quality grading for treadwear ,
traction, and temp eratu re resistance
T read wear, t raction and tempe ra tu re grades
¢ page
254 .
Maximum Permissible Inflation Pressure
This number is the greatest amount of a ir
pressure that should ever be put in the tire
u nder norma l dr iv ing cond itions .
_& WARNING ~
- Using incorrect o r unmatched tires and I
or wheels or improper tire and wheel
comb inat ions can lead to loss of control,
coll is ion and serious personal in jury.
- Always use t ires , rims and whee l bolts
that meet the specif ications of original
factory- installed tires or other combina
tions that have been sp ecifically ap
proved by the vehicle manufacture r.
- Tires age even if they are not being used
and can fai l sudden ly, especially at high
speeds . Tires that are more than 6 yea rs
old can only be used in an emergency
and then w ith special care and at lower
speeds.
- Never mo unt used tires on your veh icle if
you are not sure of the ir "previous histo
ry ." O ld used tires may have been dam
aged even though the damage cannot be
seen that can lead to sudden tire fai lure
and loss of vehicle control.
-All four whee ls must be fitted with radial
tires of the same type, size (rolling cir cumference) and the same tread pattern .
Driving with different tires reduces vehi
cle handling and can lead to a loss of
control.
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254 Tires and wheels
-If the spare tire is not the same as the
tires that are mounted on the vehicle -
for example with winter tires -only use
the spare tire for a short period of time
and drive with extra care. Refit the nor
mal road wheel as soon as safely possi
ble.
- Never drive faster than the maximum
speed for which the tires on your vehicle
are rated because tires that are driven
faster than their rated speed can fail
suddenly.
- Overloading tires cause heat build-up,
sudden tire failure, including 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
vehicles -in some cases not even wheels
from the same vehicle model.
- If you install wheel trim discs on the ve
hicle wheels, make sure that the air flow
to the brakes is not blocked. Reduced air
flow to the brakes can them to overheat,
increasing stopping distances and caus
ing a collision.
- Run flat tires may only be used on
vehicles that were equipped with them
at the factory. The vehicle must have a
chassis designed for run flat tires. Incor
rect use of run flat tires can lead to vehi
cle damage or accidents. Check with an
authorized Audi dealer or tire specialist
to see if your vehicle can be equipped
with run flat tires. If run flat tires are
used, they must be installed on all four
wheels. Mixing tire types is not permit
ted.
- For technical reasons, it is not generally
possible to use the wheel rims from oth
er vehicles. This can hold true for wheels
of the same vehicle type.
- If the spare tire is different from the
tires that you have mounted on your ve- hicle (for example winter tires or wide
profile tires), then use the spare tire for a
short period of time only and drive with
extra care. Replace
the flat tire with the
tire matching the others on your vehicle
as soon as possible.
- Never drive without the valve stem cap.
The valves could get damaged.
@ For the sake of the environment
Dispose of old tires in accordance with the
local requirements.
Uniform tire quality grading
-Tread wear
- Traction AA A B C
- Temperature ABC
Quality grades can be found where applicable
on the tire side wall between tread shoulder
and maximum section width
~fig. 195.
For example: Tread wear 200 , Traction AA,
Temperature A.
All passenger car tires must conform to Feder
al 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
government test course.
Fo r example, a tire graded 150 would wear
one and one half (1 1/2) times as well on the
government course as a tire graded 100.
The relative performance of tires depends
upon the actual conditions of their use, how
ever, and may depart significantly from the
norm due to variations in driving habits, serv
ice practices and differences in road character
istics and climate.
Traction
The traction grades, from highest to lowest,
are AA, A, Band
C. Those grades represent the
tire's ability to stop on wet pavement as ..,.
measured under controlled conditions on
specified government test surfaces of asphalt
and concrete. A tire marked C may have poor
traction performance
c::> & .
Temp erature
The temperature grades a re A (the highest),
B, and C , representing the tire's resistance to
the generation of heat and its ability to dissi pate heat when tested under controlled condi
tions on a specified indoor laboratory test
wheel.
Sustained high temperature can cause the materia l of the tire to degenerate and reduce
tire life, and excessive temperature can lead
to sudden tire fa ilure
c::> & .
The grade C corresponds to a level of perform
ance which a ll passenger car tires must meet
under the Federal Motor Veh icle Safety Stand
ard No.
109. Grades Band A represent higher
levels of performance on the laboratory test
wheel than the m inimum required by law .
&, WARNING
The traction grade assigned to this t ire is
based on stra ight-ahead b raking traction
tests, and does not include acceleration,
cornering, hydrop lan ing or peak traction
character istics .
A WARNING
The temperature grade for this tire is es
tablished for a tire that is properly inflated
and not overloaded . Excessive speed, un
derinflation, or excessive loading, either
separate ly or in combination, can cause
heat buildup and possible tire fa ilure.
Winter tires
Win ter tires can improve vehicle handling on
snow and ice. At tempera tures below 45 °F
(7 °C) we recommend changing to winter
tires.
In some heavy snow areas, loca l governments
may require true winter or "snow" tires, those
with very deeply cut tread. These t ires should
Tire s an d wheel s 255
only be used in pairs and be installed on all
fo ur wheels. Make sure you purchase snow
tires that are the same size and construction
type as the other tires on your vehicle.
If your vehicle is eq uipped w ith all -whee l
drive*, this wi ll improve traction during winter
driv ing, even with the standard tires. Howev
er, we strongly recommend that you always equip all four wheels on your veh icle w ith cor
rect ly fitted winter tires o r all -season t ires,
whe n w inter road cond it ions are expected.
T his also improves the veh icle's brak ing per
fo rmance and redu ces stoppi ng d istances.
Summer tires provide less grip on ice and
snow .
Winter tires (snow tires) must always be fitted
on all four wheels.
Ask your authorized A udi dealer or qualified
workshop for permitted
wi nter ti re size s. Use
on ly rad ial winter t ires.
Winter tires lose their effectiveness when the
tread is worn down to a depth of
0 .1 57 inch
(4 mm).
Only drive w ith w inter tires under w inter con
ditions. S umme r tires handle better when
there is no snow or ice on the roads and the
temperature is above 45
°F (7 ° ().
If you have a flat tire, see no tes on spare
whee l c::> page 251.
Please a lways remember that winter tires may
have a lowe r speed ra ting than the tires o rig i
nally installed on your veh icle at the time it
was man ufactured. P lease see
c::> pag e 252,
Speed rating (letter code) for a listing of the
speed rating letter codes and the max imum
speed at which the tires can be driven.
The speed rating le tter code
(c::> page 243) is
on the side wall of the tire
c::> page 251 .
A WARNING
Winter t ires have maximum speed limits
that may be lower than yo ur vehicle's max
imum speed. Always know the max imum
speed before dr iv ing off . Never dr ive faster
~
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.,. Always store the vehicle too l kit, the jack*
and the replaced tire in the luggage com
partment
c!:> page 132.
.,. Unhook the cargo floor before closing the
rear lid.
Using the spare tire (compact spare tir e)
The compact spare tire is on ly intended for
emergencies until you can reach a repair shop .
Replace it as quick ly as poss ible with a stand
ard wheel and tire.
There are some restrictions on the use of the
compact spare tire. The compact spare tire
has been designed specifically for your type of
veh icle. It must not be swapped with a com
pact spare t ire from another type of vehicle.
Snow chain s
For technical reasons, the use of snow chains
on the compact spare tire is
not permitted.
If you do have to dr ive w ith snow cha ins and a
front tire f ails, mount the spare whee l with
tire instead of a rear tire . Install the snow
chains on the rear tire and use it to replace
the defective front tire.
A WARNING
-Never use the spare tire if it is damaged
o r if it is worn down to the tread wear in
dicators .
- If the spare tire is more than 6 years o ld,
use it only in an emergency and w ith ex
treme caution and careful driving.
- The spare tire is intended only for tem
porary and short-term use. It should be
replaced as soon as possible w ith the
normal wheel and t ire.
- After mounting the compact spare tire,
the tire pressure must be checked as
soon as poss ible. The tire pressure of the
c ompact sp are tire must be 4.2 bar; oth
erwise, you risk hav ing an accident .
- Do not drive faster than 50 mph (80 km/
h). You risk having an acc ident.
- Avoid fu ll-throttle acce le rat ion, heavy
braking, and fast corner ing . Yo u risk hav
ing an acc iden t.
What do I do now? 263
- Never drive using more than one spare
wheel and tire. You r isk having an acci
dent .
- Normal summer or winter t ires must not
be mounted on the compact spare wheel
rim.
- For technical reasons, the use of tire
chains on the spare tire is not permitted .
If it is necessary to drive w ith t ire chains,
the spare wheel must be mounted on the
front axle in the event of a flat in a rear
tire. The newly available front whee l
m ust then be instal led i n place of the
rea r whee l w ith the flat tire. Installing
the tire chain be fore mounting the whee l
and tire is recommended.
- Loose items in the passenger compart
ment can cause serious personal injury
during hard braking or in an accident. Never store the inflatab le spare tire or
jack and tools in the passenger compart
ment.
Changing a wheel
Before changing a wheel
Observe the following precautions for your
own and your passenger's safety when chang
ing a wheel.
.,. After you expe rience a t ire failure, p ull the
car well away from mov ing traffic and try to
reach
l e vel ground before you stop ¢ _& .
.,. All passengers should lea ve th e car and
move to a safe location (f or instance, behind
the guardrail) ¢
,&.
.. Engage the par king br ake to prevent your
veh icle from rolling unintentionally
c:> _&.
.,. Move selecto r le ver to pos ition P c:> _& .
.,. If you are towing a tra iler, unhitch the trail
er from your vehicle.
.,. Take the
jack and the spar e tir e out of the
luggage compartment¢
page 262,
¢page 262. .,.
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designated seating position) and luggage
weight~&. .
Gros s Axle W eight Rating
The G ross Axle Weight Rating is the maximum
l oad tha t can be applied at each axle of the
vehicle
q .&. .
Vehicle capacit y weight
The vehicle capac ity we ight (max. load) is list
ed either on the dr iver's side B-pillar or inside
the fuel filler flap.
Roof weight
The max imum perm issible roof weight is
220 lb (100 kg ). The roof weight is made up
of the weight of the roof rack system and the
weight of the object be ing transported
q page 60, Loading the roof rack .
.&, WARNING
- T he ac tual Gross Axle Weight Rat ing at
the front and rear axles shou ld not ex
ceed the permiss ible weights, and their
combination must not exceed the Gross
Vehicle Weight Rat ing .
- Exceeding permissib le weight ratings can
result in vehicle damage, accidents and
personal injury.
CD Note
- The vehicle capacity weight figures apply
when the load is distributed evenly in the
vehicle (passengers and luggage). When
transporting a heavy load in the luggage
compartment, carry the load as near to
the rear axle as possib le so that the veh i
cle's handling is not impa ired.
- Do not exceed the maximum permissible
axle loads or the max imum gross vehicle
weight. Always remember that the vehi
cle's handling will be affected by the ex
tra load. Therefore, adjust you r speed ac
cord ingly.
- Always observe loca l regu lations.
-
G ene ral in formation 28 1
Dimensions
The specifications refer to the basic model.
Differences may occur depending on the mod
el type and options ordered, for example, tire
sizes.
CD Note
When driving up steep ramps, on rough roads, over curbs, etc. it is important to re
member that some parts of your vehicle,
such as spoilers or exhaust system compo nents, may be close to the ground . Be
careful not to damage them .
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