2019 AUDI A4 width

Assistsystems

Generalinformation
Appliesto:vehicleswith Audisideassist


B4M-0101



B8W-0101

Fig.122Rearofthevehicle:positionofthesensors
Sideassistfunctionsatspeedsaboveapproxi-
mately9mph(15km/h).
@Vehiclesthatareapproaching
Incertaincases,avehiclewillbeclassifiedas
criticalforalanechangeevenifitisstillsome-
whatfaraway.Thefasteravehicleapproaches,
thesoonerthedisplayintheoutsidemirrorwill
turnon.
Vehiclestravelingwithyou
Vehiclestravelingwithyouareindicatedinthe
exteriormirroriftheyareclassifiedascriticalfor
alanechange.Allvehiclesdetectedbysideassist
122
areindicatedbythetimetheyenteryour“blind
spot”,
atthelatest.
©Vehiclesyouarepassing
Ifyouslowlypassavehiclethatsideassisthas
detected(thedifferenceinspeedbetweentheve-
hicleandyourvehicleislessthanapproximately
9mph(15km/h)),thedisplayintheexteriormir-
rorturnsonassoonasthevehicleentersyour
blind spot.
Thedisplaywillnotturnonifyouquicklypassa
vehiclethatsideassisthasdetected(thediffer-
enceinspeedisgreaterthanapproximately9
mph(15km/h)).
Functionallimitations
Theradarsensorsaredesignedtodetecttheleft
andrightadjacentlaneswhentheroadlanesare
thenormalwidth.Insomesituations,thedisplay
intheexteriormirrormayturnoneventhough
thereisnovehiclelocatedintheareathatiscriti-
calforalanechange.Forexample:
—Ifthelanesarenarroworifyouaredrivingon
theedgeofyourlane.Ifthisisthecase,the
systemmayhavedetectedavehicleinanother
lanethatisnotadjacenttoyourcurrentlane.
—Ifyouaredrivingthroughacurve.Sideassist
mayreacttoavehiclethatisinthesamelane
or
onelaneoverfromtheadjacentlane.
—
Ifsideassistreactstootherobjects(suchas
roadsidestructureslikeguardrails).
—Inpoorweatherconditions.Thesideassist
functionsarelimited.
Donotcovertheradarsensors>fig.122with
stickers,deposits,bicyclewheelsorotherob-
jects,becausethiswillimpairthefunction.For
informationoncleaning,see>page342.

ZA\WARNING
—Alwayspayattentiontotrafficandtothe
areaaroundyourvehicle.Sideassistcannot
replaceadriver'sattention.Thedriveralone
isalwaysresponsibleforlanechangesand
similardrivingmaneuvers.
—Insomesituations,thesystemmaynot
functionoritsfunctionmaybelimited.For
example:>

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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”.
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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.

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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>
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Wheels

NEVEREXCEEDXXXKGORXXX
LBS”onyourvehicle’splacard
(tireinflationpressurelabel)
=>page332,fig.265.
.Determinethecombined
weightofthedriverandpas-
sengersthatwillberidingin
yourvehicle.
.Subtractthecombinedweight
ofthedriverandpassengers
from“XXX”kilogramsor“XXX”
poundsshownonthestick-
er>page332,fig.265.
.Theresultingfigureequalsthe
availableamountofcargoand
luggageloadcapacity.Forex-
ample,ifthe“XXX”amount
equals1400lbs.andtherewill
befive150lbs.passengersin
yourvehicle,theamountof
availablecargoandluggage
load capacityis650lbs.
(1400-750(5x150)=650
lbs.)
.Determinethecombined
weightofluggageandcargo
beingloadedonthevehicle.
Thatweightmaynotsafelyex-
ceedtheavailablecargoand
luggageload capacitycalculat-
edinStep4.
.Ifyourvehiclewillbetowinga
trailer,loadfromyourtrailer
willbetransferredtoyourvehi-
cle.Consultthismanualtode-
terminehowthisreducesthe
availablecargoandluggage
loadcapacityofyourvehicle.
>Checkthetiresidewall
(=page323,fig.262)todeter-
minethedesignatedloadrating
foraspecifictire.
Wheelboltsandrims
Wheelbolts
Wheelboltsmustbecleanandloosen/tighten
easily.
Rims
Rimswithaboltedrimring*orwith boltedwheel
covers*consistofmultiplepieces.Thesecompo-
nentswereboltedtogetherusingspecialbolts
andaspecialprocedure.Youmustnotrepairor
disassemblethem>A\.

ZAWARNING
Wheelboltsthataretightenedorrepairedin-
correctlycanbecomelooseandresultinloss
ofvehiclecontrol,whichincreasestheriskof
anaccident.Forthecorrecttighteningspecifi-
cation,see>page354,Finishing.
—Alwayskeepthewheelboltsandthethreads
inthewheelhubcleanandfreeofgrease.
—Onlyusewheelboltsthatfittherim.
—Alwayshavedamagedrimsrepairedbyan
authorizedAudidealerorauthorizedAudi
ServiceFacility.Neverrepair ordisassemble
rimsyourself,becausethisincreasestherisk
ofanaccident.

Wintertiressignificantlyimprovethevehicle's
handlingwhendrivinginwinterconditions.Be-
causeoftheirconstruction(width,compound,
337

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Wheels

Afteraheavyimpactordamage,havethetires
andrimsinspectedorreplacedimmediatelyby
anauthorizedAudidealerorauthorizedAudi
ServiceFacility.
Low-profiletirescanwearoutfasterthanstand-
ardtires.
Uniformtirequalitygrading
—Treadwear
—TractionAAABC
—TemperatureABC
Qualitygradescanbefoundwhereapplicableon
thetiresidewallbetweentreadshoulderand
maximumsectionwidth>page323,fig.262.
Forexample:Treadwear200,TractionAA,Tem-
peratureA.
AllpassengercartiresmustconformtoFederal
SafetyRequirementsinadditiontothesegrades.
Treadwear
Thetreadweargradeisacomparativerating
basedonthewearrateofthetirewhentested
undercontrolledconditionsonaspecifiedgov-
ernmenttestcourse.
Forexample,a tiregraded150wouldwearone
andonehalf(11/2)timesaswellonthegovern-
mentcourseasa tiregraded100.
Therelativeperformanceoftiresdependsupon
theactualconditionsoftheiruse,however,and
maydepartsignificantlyfromthenormdueto
variationsindrivinghabits,servicepracticesand
differencesinroadcharacteristicsandclimate.
Traction
Thetractiongrades,fromhighestto lowest, are
AA,A,BandC.Thosegradesrepresentthetire's
abilitytostoponwetpavementasmeasuredun-
dercontrolledconditionsonspecifiedgovern-
menttestsurfacesofasphaltandconcrete.Atire
markedCmayhavepoortractionperformance
SA.
Temperature
ThetemperaturegradesareA(thehighest),B,
andC,representingthetire'sresistancetothe
generationofheatanditsabilitytodissipate
heatwhentestedundercontrolledconditionson
aspecifiedindoorlaboratorytestwheel.
Sustainedhightemperaturecancausethemate-
rialofthetiretodegenerateandreducetirelife,
andexcessivetemperaturecanleadtosudden
tirefailure>A\.
ThegradeCcorrespondstoalevelofperform-
ancewhichallpassengercartiresmustmeetun-
der theFederalMotorVehicleSafetyStandard
No.109.GradesBandArepresenthigher levels
ofperformanceonthelaboratorytestwheelthan
theminimumrequiredbylaw.

Z\WARNING
Thetractiongradeassignedtothistireis
basedonstraight-aheadbrakingtraction
tests,anddoesnotincludeacceleration,cor-
nering,hydroplaningorpeaktractioncharac-
teristics.

Z\WARNING
Thetemperaturegradeforthistireisestab-
lishedforatirethatisproperlyinflatedand
notoverloaded.Excessivespeed,underinfla-
tion,orexcessiveloading,eitherseparatelyor
incombination,can cause heatbuildupand
possibletirefailure.

Z\WARNING
Temperaturegradesapplytotiresthatare
properlyinflatedandnotoverorunderinflat-
ed.

Tirepressuremonitoring
system
(1)Generalnotes
Eachtire,includingthespare(ifprovided),
should becheckedmonthlywhencoldandinflat-
edtotheinflationpressurerecommendedbythe
vehiclemanufactureronthevehicleplacardor
tireinflationpressurelabel.(Ifyourvehiclehas
tiresofadifferentsizethanthesizeindicatedon>
339

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Careandcleaning



—Toreducetheriskofcuts,protectyourself—Toreducetheriskofpaintdamage,donot
fromsharpmetalcomponentswhenwash-washthevehicleindirectsunlight.
ingtheunderbodyortheinsideofthewheel—Toreducetheriskofdamage,donotwash
housings.decorativedecals*withapressurewasher.
—Afterwashingthevehicle,thebrakingeffect—Toreducetheriskofdamagetothesurface,
maybedelayedduetomoistureonthedonotuseinsectremovingsponges,kitchen
brakerotorsoriceinthewinter.Thisin-sponges,orsimilaritems.
creasestheriskofanaccident.Thebrakes—Whenwashingmattefinishpaintedvehicle
mustbedriedwithafewcarefulbrakeappli-components:
cations.—Toreducetheriskofdamagetothesur-

face,donotusepolishingagentsorhard
@)Notewax.
—Ifyouwashthevehicleinanautomaticcar—Neveruseprotectivewax.Itcandestroy
wash,youmustfoldtheexteriormirrorsinthemattefinisheffect.
toreducetheriskofdamagetothemirrors.—Donotplaceanystickersormagnetic
Powerfoldingexteriormirrors*mustonlysignsonvehiclecomponentspaintedwith
befoldedinandoutusingthepowerfoldingmattefinishpaint.Thepaintcouldbe
function.damagedwhenthestickersormagnets
—To reducetheriskofdamagetotherimsareremoved.
andtires,comparethewidthbetweenthe
wheelsonyourvehiclewiththedistancebe-@)Forthesakeoftheenvironment
tweentheguiderailsinthecarwash.Onlywashthevehicleinfacilitiesspeciallyde-
—Toreducetheriskofdamage,comparethesignedforthatpurpose.Thiswillreduce the
heightandwidthofyourvehiclewiththeriskofdirtywatercontaminatedwithoilfrom
heightandwidthoftheinsideofthecarenteringthesewersystem.
wash.
Cleaningandcareinformation
Whencleaningandcaringforindividualvehiclearenotlisted,consultanauthorizedAudidealer
components,refertothefollowingtables.TheorauthorizedAudiServiceFacility.Alsofollow
informationcontainedthereissimplyrecommen-__theinformationfoundin>A.
dations.Forquestionsorforcomponentsthat
Exteriorcleaning






ComponentSituationSolution
Windshieldwiper|DepositsSoftclothwithglasscleaner,>page 54
blades
Headlights/DepositsSoftspongewithamildsoapsolution®
Taillights
Sensors/DepositsSensors:softclothwithasolvent-freecleaningsolution
cameralensesCameralenses:softclothwithanalcohol-freecleaningsol-
ution
Snow/iceHandbrush/solvent-freede-icingspray
WheelsRoadsaltWater
BrakedustAcid-freespecialcleaningsolution>

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