Tire AUDI S4 2019 Owner's Manual

8W0012721BG
Safetybelts

Safetybelts
Generalinformation
OEELaeLL5aes
Wearingsafetybeltscorrectlysaveslives!
Thischapterexplainswhysafetybeltsareneces-
sary,howtheyworkandhowtoadjustandwear
themcorrectly.
>Readalltheinformationthatfollowsandheed
alloftheinstructionsandWARNINGS.

ZAWARNING
Notwearingsafetybeltsorwearingthemim-
properlyincreasestheriskof seriouspersonal
injuryanddeath.
—Safetybeltsarethesinglemosteffective
meansavailabletoreducetheriskofserious
injuryanddeathinautomobileaccidents.
Foryourprotectionandthat ofyourpassen-
gers,alwayscorrectlywearsafetybelts
whenthevehicleismoving.
—Pregnantwomen,injured,orphysicallyim-
pairedpersonsmustalsousesafetybelts.
Likeallvehicleoccupants,theyaremore
likelytobeseriouslyinjurediftheydonot
wearSafetybelts.Thebestwaytoprotecta
fetusistoprotectthemother-throughout
theentirepregnancy.
Tntaemet)
YourAudihasatotaloffiveseatingpositions:
twointhefrontandthreeintherear.Eachseat-
ingpositionhasasafetybelt.


ZAWARNING
Notwearingsafetybeltsorwearingthemim-
properlyincreasestheriskof seriouspersonal
injuryanddeath.
—Neverstrapmorethanoneperson,including
smallchildren,intoanybelt.Itisespecially
dangeroustoplaceasafetybeltovera child
sittingonyourlap.
—Neverletmorepeoplerideinthevehicle
thantherearesafetybeltsavailable.


—Besureeveryoneridinginthevehicleis
properlyrestrainedwithaseparatesafety
beltorchildrestraint.
Safetybeltwarninglight
Yourvehiclehasawarningsystemforthedriver
andfrontseatpassengertoremindyouabout
theimportanceofbuckling-up.



B42-0526


Fig.216Safetybeltwarninglightintheinstrumentclus-
ter-enlarged
Beforedrivingoff,always:
>Fastenyoursafetybeltandmakesureyouare
wearingitproperly.
>Makesurethatyourpassengersalsobuckleup
and
properlyweartheirsafetybelts.
>Protectchildrenwithachildrestraintsystem
appropriateforthesizeandage.
Thewarninglightintheinstrumentcluster
lightsupwhentheignitionisswitchedonasa re-
mindertofastenthesafetybelts.Inaddition,
youwillhearawarningtoneforacertainperiod
oftime.
Fastenyoursafetybeltandmakesure thatyour
passengersalsoproperlyputontheirsafety
belts.

ZAWARNING
—Safetybeltsarethesinglemosteffective
meansavailabletoreducetheriskofserious
injuryanddeathinautomobileaccidents.
Foryourprotectionandthat ofyourpassen-
gers,alwayscorrectlywearsafetybelts
whenthevehicleismoving.
—Failuretopayattentiontothewarninglight
thatcomesoncouldlead topersonalinjury.


253

8W0012721BG
Airbagsystem


thevehiclebatterywithapyrotechniccircuit
interrupter.
—Workonthepyrotechniccircuitinterrupter
mustonlybeperformedbyaqualified
technicianswhohavetheexperience,in-
formationandspecialtoolsnecessaryto
performtheworksafely.
—Ifthevehicleorthecircuitinterrupteris
scrapped,allapplicablesafetyprecautions
mustbefollowed.
OtherthingsthatcanaffectAdvanced
Airbagperformance
Changingthevehicle'ssuspensionsystemcan
changethewaythattheAdvancedAirbagSystem
performsinacrash.Forexample,usingtire-rim
combinationsnotapprovedbyAudi,loweringthe
vehicle,changingthestiffnessofthesuspension,
includingthesprings,suspensionstruts,shock
absorbersetc.canchangetheforcesthatare
measuredbytheairbagsensorsandsenttothe
electroniccontrolunit.Somesuspensionchanges
can,forexample,increasetheforcelevelsmeas-
uredbythesensorsandmaketheairbagsystem
deployincrashesinwhichitwouldnotdeployif
thechangeshadnotbeenmade.Otherkindsof
changesmayreducetheforcelevelsmeasuredby
thesensorsandpreventtheairbagfromdeploy-
ingwhenitshould.

ZA\WARNING
Changingthevehicle'ssuspensionincluding
useof unapprovedtire-rimcombinationscan
changeAdvancedAirbagperformanceandin-
creasetheriskofseriouspersonalinjuryina
crash.
—Neverinstallsuspensioncomponentsthat
donothavethesameperformancecharac-
teristicsasthecomponentsoriginallyinstal-
ledonyourvehicle.
—Neverusetire-rimcombinationsthathave

notbeenapprovedbyAudi.

Kneeairbags
preaal)aCeaitLs-eh)
Thekneeairbagsystemcanprovidesupplemen-
talprotectiontoproperlyrestrained frontseat
occupants.
= g
=
8

Fig.231Driver'skneeairbag
Thedriverkneeairbagisintheinstrumentpanel
underneaththesteeringwheel>fig.231,the
airbagforthepassengerisataboutthesame
heightintheinstrumentpanelunderneaththe
glovecompartment.
Thekneeairbagoffersadditionalprotectionto
thedriver'sandpassenger'skneesandupperand
lowerthigh areasandsupplementstheprotec-
tionprovidedbythesafetybelts.
Ifthefrontairbagsdeploy,thekneeairbagsalso
deployinfrontalcollisionswhenthedeployment
thresholdstoredinthecontrolunitismet
=page271,Moreimportantthingstoknow
aboutfrontairbags.
Inadditiontotheirnormalsafetyfunction,safe-
tybeltshelpkeepthedriverorfrontpassengerin
positioninafrontalcollisionso thattheairbags
canprovidesupplementalprotection.
Theairbagsystemisnotasubstituteforyour
safetybelt.Rather,itispartoftheoveralloccu-
pantrestraintsysteminyourvehicle.Alwaysre-
memberthattheairbagsystemcanonlyhelpto
protectyouifyouarewearingyoursafetybelt
andwearingitproperly.Thisiswhyyoushouldal-
wayswearyoursafetybelt,notjustbecausethe
lawrequiresyoutodoso>page253,Generalin-
formation.
277
>

Wheels

Wheels Wheels
andTires
Generalinformation
>Checkyourtiresregularlyfor
damage,suchaspunctures,
cuts,cracks,andbulges.Remove
foreignobjectsfromthetire
tread.
>Ifdrivingovercurbsorsimilar
obstacles,driveslowlyandap-
proachthecurbatanangle.
>Havefaultytiresorrimsre-
placedimmediately.
>Protectyourtiresfromoil,
grease,andfuel.
>Marktiresbeforeremoving
themsothatthesamerunning
directioncanbemaintainedif
theyarereinstalled.
>Laytiresflatwhenstoringand
storetheminacool,drylocation
withaslittleexposuretolightas
possible.

AWARNING
—Neverdrivefasterthanthe
maximumpermittedspeedfor
yourtires.Thiscouldcausethe
tirestoheatuptoomuch.This
increasestheriskofanacci-
dentbecauseitcancausethe
tiretoburst.

322


—Alwaysadaptyourdrivingto
theroadandtrafficcondi-
tions.Drivecarefullyandre-
duceyourspeedonicyorslip-
peryroads.Evenwintertires
canlosetractiononblackice.

()Note
—Pleasenotethatsummerand
wintertiresaredesignedfor
theconditionsthataretypical
inthoseseasons.Audirecom-
mendsusingwintertiresdur-
ingthe wintermonths.Low
temperaturessignificantlyde-
creasetheelasticityofsumm-
ertires,whichaffectstraction
andbrakingability.Ifsummer
tiresareusedinverycoldtem-
peratures,crackscanformon
thetreadbars,resultingin
permanenttiredamagethat
cancauselouddrivingnoise
andunbalancedtires.
—Burnished,polishedor
chromedrimsmustnotbe
usedinwinterdrivingcondi-
tions.Thesurfaceoftherims
doesnothavesufficientcorro-
sionprotectionforthisand
couldbepermanentlydam-
agedbyroadsaltorsimilar
substances.

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Wheels

Tiredesignations

B8K-2316


Fig.262Tiredesignationsontheside-
wall
@Tiresforpassengervehicles
(ifapplicable)
"P"indicatesatireforapassenger
vehicle."T"indicatesatiredesig-
natedfortemporaryuse.
@Nominalwidth
Nominalwidthofthetirebe-
tweenthesidewallsinmillime-
ters.Ingeneral:thelargerthe
number,thewiderthetire.
@)Aspectratio
Height/widthratioexpressedasa
percentage.
@Tireconstruction
“R"indicatesaradialtire.
©)Rimdiameter
Sizeoftherimdiameterininches.
©Loadindexandspeedrating
Theloadindexindicatesthetire's
load-carryingcapacity.
Thespeedratingindicatesthe
maximumpermittedspeed.Also
see>AinGeneralinformationon
page322.
“EXTRALOAD”,“xl”or“RF”indi-
catesthatthetireisreinforcedor
isanExtraLoadtire.






Speedrat-/Maximumpermittedspeed
ing
Pupto93mph(150km/h)
Qupto99mph(160km/h)
Rupto106mph(170km/h)
Supto110mph(180km/h)
Tupto118mph(190km/h)
Uupto124mph(200km/h)
Hupto130mph(210km/h)
Vvupto149mph(240km/h)?
Zzabove149mph(240km/h)?
wupto168mph(270km/h)?
Yupto186mph(300km/h)?

@)Fortiresabove149mph(240km/h),
tiremanufacturerssometimesusethe
code“ZR”.
323

Wheels

@USDOTnumber(TIN)and
manufacturedate
Themanufacturedateislistedon
thetiresidewall(itmayonlyap-
pearontheinnersideofthetire):
DOT...2218...
means,forexample,thatthetire
wasproducedinthe22ndweekof
theyear2018.
@)AudiOriginalTires
AudiOriginalequipmenttires
withthedesignation“AO”have
beenspeciallymatchedtoyour
Audi.Whenusedcorrectly,these
tiresmeetthehigheststandards
forsafetyandhandling.Anau-
thorizedAudidealerorauthor-
izedAudiServiceFacilitywillbe
abletoprovideyouwithmorein-
formation.
@)Mudandsnowcapability
“M/S”or“M+S”indicatesthetire
issuitablefordrivingonmudand
snow./A\indicatesawintertire.
Compositionofthetirecord
andmaterials
Thenumberofpliesindicatesthe
numberofrubberizedfabriclay-
ersinthetire.Ingeneral:the
morelayers,themoreweighta
tirecancarry.Tiremanufacturers
324
mustalsospecifythematerials
usedinthetire.Theseinclude
steel,nylon,polyesterandother
materials.
@)Maximumpermittedload
Thisnumber indicatesthemaxi-
mumloadinkilogramsand
poundsthatthetirecancarry.
@Uniformtirequalitygrade
standardsfortreadwear,
tractionandtemperature
resistance
Treadwear,tractionand tempera-
tureranges>page339.
@Runningdirection
Thearrowsindicatetherunning
directionofunidirectionaltires.
Youmustalwaysfollowthespeci-
fiedrunningdirection
>page354.
Maximumpermitted
inflationpressure
Thisnumber indicatesthemaxi-
mumpressuretowhichatirecan
beinflatedundernormaloperat-
ingconditions.

8W0012721BG
Wheels

Glossaryoftireandloading
terminology
Accessoryweight
meansthecombinedweight(in
excessofthosestandarditems
whichmaybereplaced)ofauto-
matictransmission,powersteer-
ing,powerbrakes,powerwin-
dows,powerseats,radio,and
heater,totheextentthatthese
itemsareavailableasfactory-in-
stalledequipment(whetherin-
stalledornot).
Aspectratio
meanstheratioofthe heightto
thewidthofthetireinpercent.
Numbersof55orlowerindicatea
lowsidewallforimprovedsteer-
ingresponseandbetteroverall
handlingondrypavement.
Bead
meansthepartofthetirethatis
madeofsteelwires,wrappedor
reinforcedbyplycordsandthatis
shapedtofittherim.
Beadseparation
meansabreakdownofthebond
betweencomponentsinthebead.
Cord
meansthestrandsformingthe
pliesinthetire.
Coldtireinflationpressure
meansthetirepressurerecom-
mendedbythevehiclemanufac-
turerforatireofadesignated
sizethathasnotbeendrivenfor
morethanacoupleofmiles(kilo-
meters)atlowspeedsinthethree
hourperiodbeforethetirepres-
sureismeasuredoradjusted.
Curbweight
meanstheweightofamotorve-
hiclewithstandardequipmentin-
cludingthemaximumcapacityof
fuel,oil,andcoolant,aircondi-
tioningandadditionalweightof
optionalequipment.
Extraloadtire
meansatiredesignedtooperate
athigherloadsandathigherin-
flationpressuresthanthecorre-
spondingstandardtire.Extraload
tiresmaybeidentifiedas“XL”,
“xL’,“EXTRALOAD”,or“RF”on
thesidewall.
325

Wheels

GrossAxleWeightRating
(“GAWR”)
meanstheload-carryingcapacity
ofasingleaxlesystem,measured
atthetire-groundinterfaces.
GrossVehicleWeightRating
(“GVWR”)
meansthemaximumtotalloaded
weightofthevehicle.
Groove
meansthespacebetweentwoad-
jacenttreadribs.
Loadrating(code)
meansthemaximumloadthata
tireisratedtocarryforagivenin-
flationpressure.Youmaynotfind
thisinformationonalltiresbe-
causeitisnotrequiredbylaw.
Maximumloadrating
meanstheloadratingforatireat
themaximumpermissibleinfla-
tionpressureforthattire.
Maximumloadedvehicle
weight
meansthesumof:
(a)Curbweight
(b)Accessoryweight
(c)Vehiclecapacityweight,and
(d)Productionoptionsweight
326
Maximum(permissible)
inflationpressure
meansthemaximumcoldinfla-
tionpressuretowhichatiremay
beinflated.Alsocalled“maxi-
muminflationpressure.”
Normaloccupantweight
means150lbs.(68kilograms)
timesthenumberofoccupants
seatedinthevehicleuptotheto-
talseatingcapacity ofyourvehi-
cle.
Occupantdistribution
meansdistributionofoccupants
inavehicle.
Outerdiameter
meanstheoveralldiameterofan
inflatednewtire.
Overallwidth
meansthelineardistancebe-
tweentheexteriorsoftheside-
wallsofaninflatedtire,including
elevationsduetolabeling,deco-
rations,orprotectivebandsor
ribs.
Ply
meansalayerofrubber-coated
parallelcords.

8W0012721BG
Wheels

Productionoptionsweight
meansthecombinedweightof
thoseinstalledregularproduction
optionsweighingover5lbs.
(2.3kg)inexcessofthosestand-
arditemswhichtheyreplace,not
previouslyconsideredincurb
weightoraccessoryweight,in-
cludingheavy dutybrakes,ride
levelers,roofrack,heavyduty
battery,andspecialtrim.
Radialplytire
meansapneumatictireinwhich
theplycordsthatextendtothe
beadsarelaidatsubstantially
90degreestothecenterlineof
thetread.
Recommendedinflation
pressure
see>page325,Coldtireinfla-
tionpressure.
Reinforcedtire
meansatiredesignedtooperate
athigherloadsandathigherin-
flationpressuresthanthecorre-
spondingstandardtire.Rein-
forcedtiresmaybeidentifiedas
“XL”,“xl”,“EXTRALOAD”,or“RF”
onthesidewall.
Rim
meansametalsupportforatire
oratireandtubeassemblyupon
whichthetirebeadsareseated.
Rimdiameter
meansnominaldiameterofthe
beadseat.Ifyouchangeyour
wheelsize,youwillhavetopur-
chasenewtirestomatchthenew
rimdiameter.
Rimsizedesignation
meansrimdiameterandwidth.
Rimwidth
meansnominaldistancebetween
rimflanges.
Sidewall
meansthatportionofatirebe-
tweenthetreadandbead.
Speedrating(lettercode)
meansthespeedatwhichatireis
designedtobedrivenforextend-
edperiodsoftime.Theratings
rangefrom93mph(150km/h)
to186mph(298km/h)>table
onpage323.Youmaynotfind
thisinformationonalltiresbe-
causeitisnotrequiredbylaw.
Thespeedratinglettercode,
whereapplicable,ismoldedon
thetiresidewallandindicatesthe>
327

Wheels

maximumpermissibleroad
speeds.Seealso>AinGeneral
informationonpage322.
Tirepressuremonitoring
system
meansasystemthat detects
whenoneormoreofavehicle's
tiresareunderinflatedandillumi-
natesalowtirepressurewarning
telltale.
Tread
meansthatportionofatirethat
comesintocontactwiththeroad.
Treadseparation
meanspullingawayofthetread
fromthetirecarcass.
Treadwearindicators(TWI)
meanstheprojectionswithinthe
principalgroovesdesignedtogive
avisualindicationofthedegrees
ofwearofthetread.See
=>page331,Treadwearindicator
formoreinformationonmeasur-
ingtirewear.
UniformTireQualityGrading
isatireinformationsystemdevel-
opedbytheUnitedStates Nation-
alHighwayTrafficSafetyAdminis-
tration(NHTSA)thatisdesigned
tohelpbuyersmakerelativecom-
328
parisonsamongtires.TheUTQGis
notasafetyratingandnotaguar-
anteethatatirewill lastfora
prescribednumberofmiles(kilo-
meters)orperforminacertain
way.Itsimplygivestirebuyers
additionalinformationtocom-
binewithotherconsiderations,
suchasprice,brandloyaltyand
dealerrecommendations.Under
UTQG,tiresaregradedbythetire
manufacturersinthreeareas:
treadwear,traction,andtempera-
tureresistance.TheUTQGinfor-
mationonthetires,moldedinto
thesidewalls.
U.S. DOTTireIdentification
Number(TIN)
Thisisthetire’s“serialnumber”.
Itbegins withtheletters“DOT”
andindicatesthatthetiremeets
allfederalstandards.Thenext
twonumbersorlettersindicate
theplantwhereitwasmanufac-
tured,andthelastfournumbers
representtheweekandyearof
manufacture.Forexample,
DOT...2218...
meansthatthetirewasproduced
inthe22ndweekof2018.The
othernumbersaremarketingco-
desthatmayormaynotbeused>

8W0012721BG
Wheels

bythetiremanufacturer.Thisin-
formationisusedtocontactcon-
sumers
ifatiredefectrequiresa
recall.
Vehiclecapacityweight
meanstheratedcargoandlug-
gageloadplus150lbs.(68kilo-
grams)timesthevehicle'sdesig-
natedseatingcapacity.
Vehiclemaximumloadonthe
tire
meansthatloadonanindividual
tirethatisdeterminedbydistrib-
utingtoeachaxleitsshareofthe
maximumloadedvehicleweight
anddividingbytwo.
Vehiclenormalloadonthetire
meansthatloadonanindividual
tirethatisdeterminedbydistrib-
utingtoeachaxleitsshareofthe
curbweight,accessoryweight,
andnormaloccupantweight(dis-
tributedinaccordancewith>ta-
bleonpage334)anddividingby
two.
Occupantloadinganddistri-
butionforvehiclenormalload
forvariousdesignatedseating
capacities
Refertothetireinflationpressure
label>page332,fig.265forthe
numberofseatingpositions.Re-
fertothetable>tableon
page334forthenumberofpeo-
plethatcorrespondtothevehicle
normalload.
Newtiresorwheels
Audirecommendshavingallwork
ontiresorwheelsperformedby
anauthorizedAudidealerorau-
thorizedAudiServiceFacility.
Thesefacilitieshavethe proper
knowledgeandareequippedwith
therequiredtoolsandreplace-
mentparts.
>Newtiresdonotyethavethe
optimumgrippingproperties.
Drivecarefullyandatmoderate
speedsforthefirst350miles
(500km)withnewtires.
>Onlyusetireswiththesamede-
sign,size(rollingcircumfer-
ence),andas close tothesame
treadpatternas possibleonall
fourwheels.
>Donotreplacetiresindividually.
Atleastreplacebothtiresonthe
sameaxleatthesametime.
>Audirecommendsthatyouuse
AudiOriginalTires.Ifyouwould
liketousedifferenttires,please
notethatthetiresmayperform>
329