2014 AUDI S4 flat tire

234 Tires and wheels
Occupant loading and distribution for vehicle normal load for various designated seating
capacities
Designated seating capacity, Vehicle normal load , number Occupant distribution in a nor -
number of occupants of occupants mally loaded vehicle
5 3 2 in fron t, 1 in back seat
Cold tire inflation pressure
Tire pressure affects the overall handling, performance and safety of a vehicle.
Fi g. 189 T ire press ure label : located on driver's side B·
p ill ar
Tire pressure genera lly refers to the amount
of air in a t ire that it needs it to do its job and
safely carry the combined load of the entire
vehicle and its contents . Tire pressure is
measured in kilopasca ls (kPa), the i nterna·
tional measur ing unit and in pou nds pe r
squa re inc h (PSI). Tire pressure is based in
p art o n the vehicle's design and load limit -
the greatest amount of weight that the vehi·
cle can carry safe ly and the t ire size . The prop·
er tire pressure is freq uently referred to as the
"recommended cold tire inf lation pressure."
A ir in the tires expands when the tire heats up
because of internal frict ion when it flexes in
use . The t ire p ressu re is higher when the tire
has wa rmed up tha n when it is "cold ." It is the
in flat ion pressu re i n a "cold" tire that counts.
Therefore, you shou ld neve r let air ou t of a
warm tire to match " co ld tire infl ation pres­
sure" recommendations . The t ires wo uld then
be underinflated and could fail suddenly .
M ain taining p roper t ire pr essu re is one of the
most im po rt an t th ings you can do to he lp
avoid sudden tire failure. Underin fla ted t ires
a re a ma jo r cause of s udden tire failure. Keep·
i n g tires at the right pressure is also impor­
tant for safe and responsive vehicle handling,
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-AVANT ...,.
-...... .. _
-KPA. a PSI
-KPA. a PSI
-KPA. a PSI
Fig. 190 Ti re pr essure labe l
SEE OWNEJICS MANUA1 FOA A,DOITl<>N.IU. INfORMATlON
VOIR L£ MANUll DUPR0ftlET""" P"OUR i-t.US DE RENSEIGMEMENfS
traction, braking and load carrying. Tire pres­
sures are particularly important when the
vehicle is being driven at higher speeds, and
then especially when heavily loaded even
within the permissible load-carrying capaci­
ties approved for your vehicle .
The recommended tire pressures for your Audi
depe nd on the kind of tires o n your ve hicle
and the numbe r of passe ngers and/o r amount
of luggage you w ill be t ransporti ng .
The tire pressure label is located on the driv­
er 's side B-pillar . The tire pressure labe l lists
the recommended cold t ire inflat io n press ures
for the vehicle at its maximum capac ity
weight and tires t hat were o n your veh icle at
t h e time it was m anufactur ed .
If you wish to improve comfort wh en operat­
ing the vehicle at normal load (up to 3 occu­
pant s), you can ad just tire pre ssure s to tho se
specified f or normal vehicle load . Before op­
erating the vehicle at maximum load, you
mu st increase the ti re pressures to those
specified for maximum vehicle load
~ ,&. .
Bear in min d that the tire pressure mon itor ing
system * can o nly mo nitor the tir e press ures .,.

you have stored. The system does not recog ­
nize the load condition of your vehicle.
The effectiveness of the ti re pressu re monitor­
ing sys tem* will be impaired if you store nor ­
mal load pressures but then operate the vehi ­
cle at its maximum load¢,& .
See the illustration ¢
fig. 189 for the location
of the label on dr iver's side B-pillar (color of
the actual labe l and exact location on the ve­
hicle wi ll vary slig htly) .
Note that the fo llowing tab le is accurate at
the t ime o f go ing to press and is subject to
Model Tire designation
Engine
A4 Sedan: 225/55 Rl6 95H
2 .0 lit er All Se ason
4 -cy linder
245/45 Rl 7 95H
All Se ason
2 4 5/ 40 Rl8 93Y
Hi gh P erf or mance
2 25/5 0 Rl 7 94H
All Sea son
2 4 5/ 40 Rl 8 93H
All Se ason
2 55 /35 Rl9 96Y XL
Hig h Perf ormanc e
a llro ad: 225/55 Rl 7 97 H
2.0 l it e r All Season
4 -cy lind er
245 /45 Rl 8 l00H
All Sea so n
2 45 /45 Rl8 96 Y
Hig h Perf or mance
245 /40 Rl9 98Y XL
High P erf or mance
Tire s an d wheel s 235
change. In the event of discrepancies, the ti re
pressure label is located on the driver's side B­
pillar always takes precedence .
T he table below lists the recommended cold
ti re inflation pressures for the Audi mode l
covered by your Owner's Literature at the vehi­
cle's capacity weight and the t ire sizes instal­
l ed on the respective models as orig inal
equipment, or as a factory option.
Tire pressure
normal load condition full load condition
( up to 3 occupants )
f r ont rear front rear
PSI kPA PSI kPA PSI kPA PSI kPA
32 220 29 200 33 230 35 240
32 220 29 200 33 230 35 240
32 220 29 200 33 230 35 240
33 230 30 210 35 240 36 250
33 230
32 220
36 250
38 260
32 220 30 210 35 240 35 240
30 2 10 30 2 10 33 230 36 250
32 220 32 220 33 230 36 250
30 210 30 2 10 33 230 36 250
32 220 29 200 35 240
38 260
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-Incorrect tire pressures and/or underin­
flation can also lead to sudden tire fa il­
ure, including a blowout and sudden de­
flation, causing loss of vehicle control.
Checking tire pressure
The correct tire pressure for the tires original­
ly installed on your vehicle is listed on the tire
pressure label located on driver's side 8-pil­ lar .
The recommended t ire pressures are on the
tire pressure label and in the table
c:> page 234, Cold tire inflation pressure . This
means that the pressure must be checked and
adjusted when the tire has not been driven for
mo re tha n a couple of m iles (k ilome ters) at
l ow speeds during t he p revious three hours.
A ir in the tires expands when the ti re heats up
as a result of inte rna l friction as it flexes in
use. The tire press ure is higher when the tire
has warmed up than when it is "cold."
It is the i nflat ion p ressu re in a "cold" tire that
counts . Therefore, you shou ld never let air ou t
of a warm tire to match "Cold tire inflation pressure" recommendations
c:> page 234. The
tires would then be under inflated and could
fa il suddenly.
The tire press ure labe l on yo ur Audi lists the
recommended cold t ire inflat ion pressures at
maximum capacity for the new, origina l
equ ipment tires that were on your vehicle at
the time it was manufactured. For the loca­
tion of the label
<=> page 234, fig . 189 .
Most tires lose a ir naturally over time. They
can also lose some a ir if you drive
over a pot­
hole or hit a curb while parking. It is usually
not possible to see whether the radial t ires
used today are underi nflated just by looking
at them.
Therefore, be sure to check tire pressures at
least o nce a month and always before going
on a long tr ip . Make sure to take the number
of people and the amount of luggage into ac­
coun t when adjusting tire pressure for a t rip -
even one that you would not consider to be
Tire s an d wheel s 237
"long." See c:> page 2 38, Tires and vehicle
load limits
for more important information.
A lways use an acc ura te tire pressu re ga uge
when checking and ad justing infla tion pres ­
s ur es . Check all o f the tires and be sure not to
forget the spare tire. If the pressure in any t ire
is too h igh when the tire is "cold", let a ir o ut
of the t ire s low ly w ith the edge of the tire
gauge and keep checking the pressure until
you reach the pressure that is correct for the load (passengers and luggage) and k ind of
driv ing you plan to do.
If the pressure in any tire is too low, note the
difference between the pressure in the co ld
t ire a nd the pressure you need and add the air
that you need to reach the correct pressure for
t h e ve hicl e load (passenge rs and luggage) for
the tires on you r veh icle as l isted on the on
yo ur vehicle and in this ma nual and the kind
of driving you plan to do.
Never exc eed the maximum inflation pr es­
sure li ste d on the tire sidewall for any re a­
s o n.
Remember that the vehicl e manufacture r, not
t h e tire manufact urer, de termines t he cor re ct
t ir e p ress ure fo r th e tires on your ve hicl e.
It is important to check the t ire p ressu re whe n
the tires are co ld.
- Read the required tire pressure from the t ire
pressure labe l. The t ire pressure label is lo­
cated o n the dr iver's side 8-pillar. The tire
pressure labe l lists the recommended co ld
tire infla tion pressures for t he vehi cle at its
maxim um capacity weigh t and t he tires that
were on your ve hicle a t the time i t was man­
ufactured . For recommende d tire pressures
for normal load conditions, p lease see chap­
ter
c:> page 2 34.
- Tu rn the va lve stem cap counter -clockwise
to remove it from the tire
va lve .
-Place t he ai r pressure gauge on the va lve.
- The tire pressu res should o nly be checked
and ad justed when the tires are co ld . The
slightly raised pressures of warm tires must
not be red uced.
Ill>-
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238 Tire s and whee ls
- Adjust the tire pressure to the load you are
carrying.
- Reinsta ll the va lve stem cap on the valve .
When should I ch eck the tire pres sur e?
The correct tire pressure is especially impor­
tant at high speeds. The pressure should
therefore be checked at least once a month
and a lways before starting a journey. Do not
forget to check the tire pressure for the spare
wheel.
When should I adj ust the tire p re ss ures?
Adjust the tire pressure to the load you are
carry ing . After changing a wheel
o r replacing
wheels you have to adjust the tire pressures
on all wheels . In addition, you must then initi­
alize the new tire pressures in the tire pres­
sure monitoring system*~
page 249.
A WARNING
Incorrect tire pressures and/or underinf la­
tion can lead sudden tire failure, loss of
control, collision, ser ious personal injury
or even death.
- When the
RI] warning symbol appears in
the instrument cluster, stop and inspect
the tires .
- Incorrect tire pressure and/or underinfla­
t ion can cause increased t ire wear and
can affect the handling of the veh icle and
stopp ing ability.
- Incorrect tire pressures and/or underin­
flation can also lead to sudden tire fa il­
ure, including a blowout and sudden de­
flation, causing loss of vehicle control.
- The driver is responsible for the correct
t ire pressures fo r all tires on the vehicle .
T he applicable p ressure va lues are locat­
ed on a sticker on the driver's side B-pil ­
lar.
- Only when a ll ti res on the vehicle are fi l­
led to the correct pressure, the tire pres­
sure monitoring system* can work cor­
rect ly.
- The use of incorrect tire pressure values
can lead to accidents or other damage.
Therefore it is essential that the driver observe the specified t
ire pressure values
for the tires and the correct pressures for
the function of the ti re pressure monitor­ing system*.
- Always inflate tires to the recommended
and correct t ire pressure before dr iv ing
off.
- Driving with underinflated tires bend
more, letting them get too hot resulting
in tread separation, sudden tire failure
and loss of control.
- Excessive speed and/overloading can
cause heat build-up, sudden tire failure
and loss of cont rol.
- If the tire pressure is too low or too high,
the t ires will wear prematurely and the
veh icle w ill not handle well.
- If the tire is not flat and you do not have
to change a wh eel immediately, drive at
reduced speed to the nearest service sta­
tion to check the t ire p ressure and add
air as required.
Q) Note
D riving without valve stem caps can cause
damage to the tire valves. To prevent this,
a lways make sure tha t factory insta lled
valve stem caps on all whee ls are sec urely
mounted on the valve.
@ For the sake of the environment
U nderinflated tires w ill also incre ase the
fuel consumption .
Tires and vehicle load limits
There are limits to the amount of load or
weight that any veh icle and any tire can carry.
A vehicle that is over loaded will not handle
well and is more d iff icult to stop. Overloading
can not only lead to loss of vehicle control,
but can also damage important parts of the
vehicle and can lead to sudden tire fa ilure, in­
clud ing a b lowout and sudden deflation tha t
can cause the vehicle to crash.
Your safety and that of your passengers also depends on making sure that load limits are .,..

not exceeded . Vehicle load includes everybody
and everything in and on the vehicle. These
l oad limits are techn ica lly referred to as the
ve hicle's
Gross Veh icle We ight Rat ing
("GVWR").
The "GVWR" includes the weight of the basic
veh icle, all factory insta lled accessories, a full
tank of fu el, oil, coolant and other fluids plus
maximum load. The maximum load includes
the number of passengers that the vehicle is
i n tended to carry ("seating capacity") with a n
assumed weight of 150 lbs . (68 kg) for each
passenger at a des igna ted sea ting pos ition
and the tota l we ight of any l uggage in the ve­
h icle. If you tow a trailer, the weight o f the
trailer hitch and the tong ue weight of the
l oaded trailer must be included as part of the
veh icle load.
The
Gro ss A xle Weight Rating ("GAWR") is
the maximum load that can be applied at each
of the vehicle's two ax les.
The G ross Vehicle We ight Rating and the
Gross Axle Weight Rating are listed on the
safety compliance sticker labe l located on the
driver's side B -pi llar . Your Audi has 5 seating
positions, 2 in the front and 3 in the rear for
tota l seating capacity of 5. Each seating posi­
tion has a seat belt¢
page 138, Safety belts.
The fact that there is an upper limit to your
veh icle's Gross Vehicle Weight Rating means
that the tota l 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 limited. The more passen­
ge rs in the veh icle or passengers who are
h eav ier than the standa rd weights assumed
mean that less weight can be ca rr ied as l ug­
gage.
The tire pressure labe l on you r Audi also lists
the maximum combined we ight of all of the
oc cu pants and luggage o r othe r ca rgo that
the vehicle can carry . For the location o f the
l abe l
¢page 234, fig. 189.
Tires an d wheel s 239
A WARNING
Overloading a vehicle can cause loss of ve­
h icle contro l, a crash or other accident, se­
rious pe rsonal injury, and even death.
- Carrying more we ight than your veh icle
was des igned to carry will prevent the
veh icle 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 overload­
ed can fail suddenly, incl uding a blowout
and sudden defla tion, causing loss of
contro l and a crash.
- Always ma ke sure that the total load be­
ing transpor ted - incl uding the weight of
a trailer hitch and the tongue weight of a loaded trailer -does not ma ke the vehi­
cle heavier than the vehicle's Gross Vehi­
cle We ight Rating.
Determining correct load limit
U se th e example below to ca l­
culate the total weight of the
pa ssengers and lu ggage or oth­
e r thing s that you pl an t o tran s­
po rt so that you can make sur e
that your vehicle will not be
o verloaded.
Steps for Determining
Correct Load Limit
1 . Lo cate th e statement "THE
COMBINED WEIGHT OF O C­
CUPANTS AND CARGO
SHOULD NE VER E XCE ED XXX
KG OR XXX LBS"on your vehi-
c le 's pla card (tire inflation ..,
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242 Tires and wheels
New tires and replacing tires and wheels
New tires and wheels have to be broken in .
Fig. 193 Tire speci fication codes o n the s idewal l of a
t ir e
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 rating
0 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 tires and rims approved
by Audi are specially matched to the charac­
ter istics of the vehicle and can make a major contribution to good road holding and safe
handling when in good condition and properly
inflated
¢
&..
We recommend that all work on tires and
whee ls be performed by an authorized Audi
dealer. They are familiar with recommended
procedures and have the necessary special
tools and spare parts as well as the proper fa­
cilities for disposing of the old tires.
Authorized Audi dea lers have the necessary
information about technical requirements for
installing or changing tires and rims .
Replacing tires and wheels
Tires should be replaced at least in pairs and
not individually (for example both front tires
or both rear tires together).
Be sure to read and heed the information to
the tire pressure mon itor ing system *
co page 249 .
Always buy replacement radia l tires that have
the same spec ifications as the tires approved
for your vehicle by Audi. Replacement tires
must a lways have the same load rating speci­
fication as the origina l equipment or approved
optiona l tires listed in the table¢
page 234 .
Audi-approved specification tires are specia lly
matched to your vehicle and its load limits,
and can contribute to the important roadhold­
ing, driving characteristics, and safety of the
vehicle. The table
(c;, page 234) lists specifica­
tions of the tires approved for the Audi mod­ els covered by your Owner's Literature .
The tire pressure label located on driver's side
B-pillar
(c;, page 234, fig. 190) lists the speci­
ficat ions of the original equipment tires in­
stalled on your vehicle at the time it was man ­
ufactured .
Federal law requires tire manufacturers to
place standardized information on the side­
wall of all tires
co fig . 193. Th is information
identifies and descr ibes the fundamenta l
characteristics, the quality grade of the tir e
and also provides a tire identification number
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24 4 T ire s and wheel s
Tire pl y compo sit ion and materi als used
The numbe r of plies ind icates the n umber of
l ayers of rubber -coated fabric in the tire. In
general, the greater the number of p lies, the
more weight a tire can support . Tire manufac­
turers also must indicate the materials in the
tire, wh ic h include steel, nylon, polyester, and
others.
M ax imum Load R ating
This number indicates the maximum load in
kilograms and pounds that can be carried by
the tire .
Tire quality grading for treadw ear ,
tr act ion, a nd t emper ature re sis tan ce
Tread wear, traction and temperature grades
c:> page245.
Max imum Permiss ibl e Inflation Pressur e
This numbe r is the greates t amo unt of air
p ress ure that sho uld ever be put in the ti re
under normal driving conditions .
A WARNING
-Us ing incorrect or unmatched tires and/
or wheels or improper tire and wheel
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
t ions that have been spec ifically ap­
proved by the vehicle manufacturer.
- 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
o ld can only be used in an emergency
and then with special care and at lower
speeds.
- Never mount used ti res on yo ur vehicle if
yo u are not su re 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.
- 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
.
Driving with different tires reduces vehi­
cle handling and can lead to a loss of
control.
- 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 t ire fo r a short pe riod of time
and d rive with extra care . Refit the nor­
mal road wheel as soon as safely poss i­
b le.
- Never d rive faster than the max imum
speed for which the tires on you r vehicle
are rated because tires that are dr iven
faster than their rated speed can fai l
suddenly .
- Overloading tires cause heat build-up,
sudden tire fa ilure, including a blowout
and sudden deflation and loss of cont ro l.
- Temperature grades apply to tires that are properly inflated and not over or un­
de rinf lated .
- For technica l reasons it is not always
possible to use whee ls from other
veh icles -in some cases not even wheels
from the same veh icle model.
- If you install wheel trim discs on the ve­
hicle wheels, make sure that the a ir flow
to the brakes is not blocked. Reduced air­
f low to the brakes can them to overheat,
increas ing stopp ing distances and caus­
ing a co llision.
- Run flat tires may only be used on veh icles that were equipped with them
at the factory. The veh icle must have a
chassis designed for run flat tires and a
f a ctory -inst alled tire pressure monitor­
ing sys tem * that indicates a loss of tire
pressu re . I ncorrect use of run flat tires
can lead to vehicle damage or accidents.
Check with an authorized Audi dealer or
tire specialist to see if your vehicle can be
equ ipped w ith run flat t ires. If run flat
tires are used, they must be installed on
all fo ur wheels . Mix ing tire types is not
pe rm itted.

(D Note
-For technica l reasons, it is not genera lly
possib le to use the whee l rims from oth­
er vehicles. This can hold true for wheels
of the same vehicle type.
- If the spare ti re is different from the tires that you have mounted on your ve­hicle (for example w inter t ires or wide
profile t ires), then use the spare t ire for a
short period of time only and drive with
extra ca re. Replace the flat tire with the
tire match ing the others on you r vehicle
as soon as possible.
- Never dr ive without the valve stem cap.
The valves could ge t damaged.
@) For the sake of the environment
Dispose of old t ires in accordance with the
local requ irements.
Uniform tire quality grading
- T read wear
- T raction AA A BC
- T emperature ABC
Quality grades can be found where applicable
on the tire side wall between tread shoulder
and maximum sect ion w idth
¢ page 242,
fig . 193.
For e xample: Tread wear 200 , Tract ion AA ,
Temperature A.
All passenger car tires must confo rm to Feder­
a l Safety Requirements in addition to these
grades.
Tr ead wea r
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.
F or examp le, a tire graded 150 wou ld wear
one and one half (1 1/2) times as well on the
government course as a tire graded 100 .
The rela tive performance of t ires depends
upon the actua l conditions of their use, how -
Tires an d wheel s 245
ever, and may depa rt s ignificantly from the
norm due to variations in driving habits , serv­
ice practices and differences in road character­
istics and cl imate.
Traction
T he traction grades, from highest to lowest,
are AA, A, Band
C. Those g rades represent the
ti re's ability to stop on wet pavement as
measured under contro lled conditions on
specified government test surfaces of asphalt
and concrete. A tire marked C may have poor
traction performance
¢ A .
Temper ature
The temperature grades are 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 specif ied indoor laboratory test
whee l.
Sustained h igh temperature can cause the
mater ial 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
under the Federal Motor Vehicle Safety Stand ­
ard No . 109 . Grades Band A represent higher
levels of perfo rmance on the labo rato ry test
whee l than the minim um requ ired by law.
,&. WARNING
The t ra ction gr ade assigned to t his tire i s
based on s traight -ahead braking traction
tests, and does not include acce leration,
cornering, hydroplaning or peak t raction
characterist ics .
,&. WARNING
The temperature grade for this tire is es­
tablished for a tire that is properly inf lated
and not overloaded. Excess ive speed, un­
de rinflation, or excess ive l oad ing, e ither
separately or in combinat ion, can ca use
h eat bui ldup and possib le tire failure.
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