2018 MERCEDES-BENZ E-CLASS SEDAN Owner's Manual

and one-half times aswell on theg ove rnment
te st trac kasat ireg rade d1 00.
The relativ eperform anc eoft ires depends upon
th ea ctual conditions of their use, ho wever,and
ma ydepar tsignificantl yfromt he nor mdueto
va riations in drivin ghabits, servic epractice sand
dif fere nces in road characteristic sand climate
conditions.
Tr actio ngrade
&
DANG ER Risk of accidentd uetoinade‐
qu atet raction
The traction grade assigned tothis tir eis
based on stra ight-ahead brakin gtraction
te sts, and does no tinclude either accelera‐
tion, cornering, hydroplaning or peak traction
ch aracteristics.
#Alw aysa dap tyour driving stylea nd
driv eatas peedtosuit thep reva iling
traf fica nd weather conditions.
* NO
TEDama getothed rive trai nfrom
wheelspin
#Av oid wheelspin.
The traction grades –fromh ighes ttolowest –
ar eA A, A, Band C. Those grades represent the
tire's ability tostop on wetpave ment as meas‐
ured under controlledc onditions on specified
go vernment test sur faces mad eofasphalt and
concr ete.
Te mp eratur egrade
&
WARNING Risk of accident from tire
ove rheating and tir efailure
The temp eratur egrade fort his tir eisestab‐
lishedf oratiret hat is properly inflated and
no to verloaded. Excessiv espeed, underinfla‐
tion, or excessiv eloading, either separately
or in combination, can cause excessiv eheat
build-up and possible tir efailure.
#Obser vether ecommende dtirep res‐
sure sand regularly checkt he tir epres‐
sur eofa ll tires including thes pare
wheel.
#Ad jus tthe tir epressur easn ecessar y.
Thetemp eratur egrades ar eA(theh ighest), B
and C. The yrepresent thet ire's resis tance tothe
ge neration of hea tand its ability todissipate
heat when tested under controlled conditions on
as pecified indoor laborator ytestw heel. Sus‐
ta ined high temp eratur ecan cause them aterial
of thet iretod egenerat eand reduce tir elife, and
exc essiv etemperatur ecan lead tosudden tire
fa ilure. Grade Ccorresponds toaleve lofp er‐
fo rm anc ewhicha ll passenger car tires must
mee tunde rthe requ irements of theUSD epart‐
ment of Transpor tation.
DO T,Tire Identification Numbe r(TIN)
US tir eregulations stipulat ethat everytire man‐
ufactu rerorr etre ader must imprint aTIN in or
on thes ide wall of eac htirep roduced.
Wheels and tires 367

%The dat ashown in thei mag eise xamp le
data.
The TIN is aunique identification number to
identify tires and comprises thef ollowing:
RDO T(Department of Transport ation):tire
symbol mar ks1 indicatin gthat thet ire
complies wit hthe requ irements of theU S
Departmen tofTranspor tation.
RManufacturer identi fication code: manu‐
fa cturer identification code 2contains
de tails of thet irem anufacturer .New tires
ha ve ac odew itht wo symbols. Retreaded
tires ha veac odew ithf our symbols .Further
information on retreade dtires (
→page 374).
RTire size: identifier 3describes thet ire
size.
RTi re type code: tiret ypec ode 4can be
used bythem anufacturer as acode to
describe specific characteristic softhe tire.
RManufacturing date: manufacturing date
5 prov ides informatio nabout thea geof a
tire. The 1s tand 2nd position srepresent the
calenda rweek and the3 rdand 4t hpositions
st at et he year of manufactur e(e.g. "3208"
re present sthe 32nd week of 2008).
Information on them aximum tir eload
%
The dat ashown in thei mag eise xamp le
data.
Maximum tir eload 1isthem aximum permissi‐
ble weight forw hich thet ireisa pprove d.
Do no toverload thet ires by ex ceeding thes peci‐
fi ed load limit. The maximum permissible load
can be found on thev ehicle's Tire and Loading
Info rmatio nplacar dont he B-pillar on thed riv‐
er's side (
→pag e361).
Specifications form aximum tir epress ure
%
The da tashown in thei mag eise xamp le
data.
368 Wheels and tires

Nevere xceed maximum tir epressure 1speci‐
fi ed fort he tire.
Information on tir echaracteristics
%
The dat ashown in thei mag eise xamp le
data.
This information descri besthet ype of tir ecord
and then umber of la yers in side wall1 and
under tir etread 2.
Tire size designation, load-bearing capacity,
speed ratin ga nd load index
&
WARNING Risk of injury thro ugh exceed‐
ing thes pecified tir eload rating or the
permissible speed rating
Exceeding thes pecified tir eload rating or
th ep ermissible speed rating ma ylea dtot ire
damage andtothet ires bur sting.
#Therefore, onl yuse tir etypes and sizes
appr ovedfor your vehicle model.
#Obser vethet irel oad rating and speed
ra ting requ ired fory our vehicle.
1Preceding letter
2Nominal tir ewidthinm illimeters
3Aspect ratio in %
4Tire code
5Rimd iame ter
6Load-bearing index
7Speed rating
8Loadi ndex
% The dat ashown in thei mag eise xamp le
data.
Info rmatio nabout readingt ired atac an be
obtaine dfroma nyqualified specialis tworks hop.
Wheels and tires 369

Preceding letter1:RWithout :passenger vehicle tires according to
Europea nmanufactu ring standards.
R"P": passenger vehicle tires according toUS
manufacturing standards.
R"LT": light truc ktires accordingtoUSm anu‐
fa cturing standards.
R"T": compact emer gency spa rewheels with
high tir epressur ethat ar eonly designe dfor
te mp orar yuse in an emer gency.
Aspec tratio 3
:
Ra tio betwee ntireh eight and tir ewidth in per‐
cent (ti reheight divided bytirew idth ).
Tir ec ode4
(ti re type):R"R"r adial tire
R"D": bias ply tire
R"B": bias belted tires
R"ZR": radial tir ewitham aximum speed abo ve
14 9m ph (240 km/h) (optional) Rim diame
ter5
:
The diam eter of theb ead seat (no tthe diame ter
of ther im flange). The rimd iame teriss pecified
in inches (in).
Load-bearing index 6
:
Numerical code that specifies them aximum
load-bearing capacity of atire( e.g. "91" cor re‐
sponds to1356 lbs (6 15kg)).
The load-bearing capacity of thet irem ustbea t
leas thalf thep ermissible axle load of your vehi‐
cle. Do no toverload thet ires byexc eeding the
specified load limit.
See also:
RMaximum permissible load on theT irea nd
Loading Info rmatio nplacar d(→page361)
RMaximum tir eload (→pag e368)
RLoad ind ex
Speed rating 7
:
Specifie sthe appr oved maximum speed of the
tire. %
An electroni cspeed limiterpreve nts your
ve hicle from exceeding aspeed of 130m ph
(2 10 km/h).
Make surethat your tires ha vether equired
speed rating .You can obtain information on the
re qu ired speed rating from an au thorized
Mercedes-Benz Center.
Summer tires
Inde xS peedrating
Qu pto100mph(160k m/h)
Ru pto106mph(170k m/h)
Su pto112mp h(180k m/h)
Tu pto118mp h(190k m/h)
Hu pto130mph(210k m/h)
Vu pto149mph(240k m/h)
Wu pto168mph(27 0k m/h)
Yu pto186mph(300 km/h )
370
Wheels and tires

IndexS peedrating
ZR...Y
1up to186m ph (300 km/h)
ZR...(..Y)
1ove r186 mph(300 km/h )
ZR
1ove r149 mph(240k m/h)
RSpecifying thes peed rating as the" ZR" index
in tir ecode 4is optional fort ires up to
18 6m ph (300 km/h).
RIfyo ur tir ecode4 includes "ZR"andthere
is no speed rating 7,f ind out what them ax‐
imum speed is from thet irem anufacturer.
RIf load-bearing index 6and speed rating 7
ar einb rack ets, them aximum speed rating of
yo ur tir eisa bove 186m ph (300 km/h). To
fi nd outt he maximum speed, ask thet ire
manufacturer. All-weather tires and winter tires
Inde
xS peedrating
QM +S
2upto100m ph (160 km/h)
TM +S
2upto118m ph (190 km/h)
HM +S
2upto130m ph (2 10km/h)
VM +S
2upto149m ph (240 km/h)
Winter tires bear thei snowflak esymbol
and fulfill ther equirements of theR ubber Manu‐
fa cturer sAssociation (RMA) and theR ubber
Associatio nofCanada (RAC) rega rding thet ire
traction on sno w.
Load index 8
:RNo specification given: standar dload (SL)
tire
R"XL" or "Extra Load": extral oa dt ireorr ein‐
fo rc ed tire
R"Light Load": light load tire
R"C", "D", "E": aload rang et hat depe ndso n
th em aximum load that thet irec an car ryat a
cer tain pressure
Definition of termsfor ti resa nd loading
Ti re stru ctureand characteristics: describes
th en umber of la yers or then umber of rubber-
coated belts in thet irec ontact surf ace and the
tir ew all. These ar emade of steel, nylon, poly‐
es tera nd other materials.
Bar: metric unit fort irep ressure .
14 .5038 pounds per squar einc h( psi) and
10 0k ilopasca l(kPa) is thee quivalent of one bar.
DO T(Department of Transport ation):DOT-
mar kedt ires fulfill ther equirements of the
US Department of Transpor tatio n.
Av erag eweight of thev ehicle occupants: the
numbe rofvehicle occupants forw hich th evehi‐
cle is designed, multiplied by150lb( 68kg).
1"ZR" stated in thet irec ode.2Or "M+S i"for winter tires
Wheels and tires 37
1

Unifor mT ireQ uality Grading Standards: a
unifor mstandar dtog rade theq ualityoft ires
wit hregar dtot read quality, tiret raction and
te mp eratur echaracteristics. The qualityg rading
assessment is made bythem anufacturer follow‐
ing specifications from theU .S. go vernment. The
qu alityg rade of atireisi mprinted on thes ide
wa ll of thet ire.
Re commende dtirep ressure :th er ecommen‐
ded tir epressur eist he tir epressur especified
fo rt he tires mounted tothev ehicle at thef ac‐
to ry.
The tir eand information table conta insther ec‐
ommended tir epressures forc old tires, them ax‐
imum permissible load and them aximum per‐
missible vehicle speed.
The tir epressur etable con tains ther ecommen‐
ded tir epressures forc old tires under various
operating conditions, i.e. loading and/or speed
of thev ehicle.
Increased vehicl eweight due tooptional
equipment: thec ombined weight of all standard
and optional equipment available fort he vehicle, re
ga rdless of whe ther it is actually ins talled on
th ev ehicle or not.
Rim: thep artoft he wheel on whic hthe tir eis
ins talled.
GA WR (Gross Axl eWeight Rating): theG AWR
is them aximum permissible axle load. The
actual load on an axle mus tnever exc eed the
gros saxle weight rating .The gross axl eweight
ra ting can be found on thev ehicle identification
plat eont he B‑pillar on th
ed rive r's side.
Speed rati

ng: thes peed rating is pa rtof thet ire
identification .Itspecifies thes peed rang ef or
whic hatireisa pprove d.
GV W( Gross Vehicl eW eight): theg ross vehicle
we ight comprises thew eight of thev ehicle
including fuel, tools, thes par ew heel, accesso‐
ri es ins talled, occupants, luggag eand thet railer
dr aw bar nose weight,ifa pplicable. The gross
ve hicle weight mus tnotexc eed theg ross vehicle
we ight rating GVWR as specified on thev ehicle
identification plat eonthe B‑pillar on thed rive r's
side.
GV WR (Gross Vehicl eW eight Rating): the
GV WR is them aximum permitted gross weight of
thef ully laden vehicle (weight of thev ehicle
including all accessories, occupants, fuel, lug‐
ga ge and thet railer dr awbar nose weight if appli‐
cable). The grossvehicle weight rating is speci‐
fi ed on thev ehicle identification plat eonthe
B‑pi llaronthed rive r's side.
Maximum weight of thel aden vehicle: the
maximu mweight is thes um of thec urb weight
of thev ehicle, thew eight of thea ccessories, the
maximu mloada ndthew eight of optional equip‐
ment ins talled at thef actor y.
Kilopasca l(kP a): metr icunit fort irep ressure .
6.9 kP acorresponds to1p si.A nother unit for
tir ep ressur eisb ar.1 00 kilopasca l(kPa) equals
1b ar.
Load index: in additiontothel oad-bearing
index, thel oad inde xmayalso be imprinted on
th es ide wall of
thet ire. This specifies thel oad-
bearing capacit
y of thet irem orep recisel y.
Cur bw eight: thew eight of avehicle wit hstand‐
ar de quipment includingt he maximum capacity
of fuel, oil and coolant. It also includes thea ir
conditionin gsystema nd optional equipment if
372
Wheels and tires

these ar einstalled on thev ehicle, but does not
include passenger sorluggage.
Maximum tir eload: them aximum tir eload is
th em aximum permissible weight in kilog rams or
lbs forw hich atireisa pprove d.
Maximum permissible tir epressure: maxi‐
mum permissible tir epressur efor one tire.
Maximum load on one tire: maximumloado n
one tire. This is calculated bydividing them axi‐
mum axle load of one axle bytwo.
PSI (pounds per squar einch) :st andar dunit of
measurementf or tirepressure .
Aspect ratio: ratio betwee ntire height and tire
widt hinp ercent.
Tir ep ress ure: pressur einside thet irea pplying
an outwar dforce toeve rysquar einc hoft he tire.
The tir epressur eiss pecified in pounds per
squar einc h( psi), in kilopascals (kPa) or in bar.
The tir epressur eshould onl ybecorrected when
th et ires ar ecold.
Cold tir epressure: thet ires ar ecold when the
ve hicle has been par kedf or at leas t3hours without direct sunlight on
thet ires or thev ehicle
has been driven forl ess than 1m ile (1.6 km).
Ti re contact sur face: thep artoft he tir ethat
comes int ocontact wi th theroad.
Ti re bead: thep urpose of thet ireb ead is to
ensur ethat thet ires its securel yonthe wheel
ri m. Ther eareseveralw irec ores in thet ireb ead
to preve ntthet iref romc hanging lengt honthe
whee lrim.
Side

w all: thep artoft he tir ebetwe en thet read
and thet ireb ead.
We ight of optiona lequ ipment: thec ombined
we ight of theo ptional equipment weighingm ore
th an ther eplaced standar dparts and mor ethan
5l bs (2. 3kg).T his optional equipment, suc has
high-per form anc ebrake s, le velc ontrol sy stem, a
ro of luggag erackorh igh-per form anc ebatte ries,
is no tincluded in thec urb weight and thew eight
of thea ccessories.
TIN (Tir eIdentification Number): auniqu e
identification number whic hcan be used bya
tir em anufactu rertoi dentify tires, fore xamp le,
in ap roductr ecall, and thus identif ythe pur‐
ch asers. The TIN is made up of them anufactur‐ er's identit
ycode, tir esize, tir etype code and
th em anufacturing date.
Load-bearing index: thel oad-bearing inde xisa
code that con tains them aximum load-bearing
capacity of atire.
Tr action: traction is theg ripr esulting from fric‐
tion between thet ires and ther oad sur face.
We ar indicator: narrow bars(tread wear bars)
th at ar edistributed overthe tir econtact surf ace.
If th et iret read is le velw itht he bars, thew ear
limit of 1/1 6in(1.6m m) has been reached.
Distribution of vehicl eoccupants: distribution
of vehicle occupants over designated seat posi‐
tion sinav ehicle.
Maximum permissible pa yload weight: nomi‐
nal load and luggag eload plus 150lb( 68kg
)
mu

ltipliedbyt he number of seats in thev ehicle.
Wheels and tires 37
3

Changingawheel
Note sons electing, installing and replacing
tires
Mercedes -AMG vehicles: observethe no tesi n
th eS upplement .Otherwise, youm aynotrecog‐
niz ed angers.
Yo uc an ask fori nformation rega rding permitte d
wheel/tir ecombinations at an authorized
Mercedes-Ben zCenter.
&
WARNING Risk of accident duetoi ncor‐
re ct dimensions of wheelsa nd tires
If wheelsa nd tires of thew rong size are
ins talled, thew heel brakes or wheel suspen‐
sion components ma ybedamaged.
#Alwaysr eplace wheels and tires with
th ose that fulfill thes pecification sof
th eo riginal part.
When replacing wheels, mak esuretof itth e
cor rect:
RDesignation
RModel
Whenr eplacing tires, mak esuretoi nstallth e
cor rect:
RDesignation
RManufactu rer
RModel
&
WARNING Risk of injury thro ugh exceed‐
ing thes pecified tir eload rating or the
permissible speed rating
Exceeding thes pecified tir eload rating or
th ep ermissible speed rating ma ylea dtot ire
damage andtothet ires bur sting.
#Therefore, onl yuse tir etypes and sizes
appr ovedfor your vehicle model.
#Obser vethet irel oad rating and speed
ra ting requ ired fory our vehicle.
* NO
TEDama getovehicle and tires due to
non-app rove dt iret ypes and sizes
Fors afet yr easons, onl yuse wheels, tires
and accessories whichhave been appr oved
fo ry our vehicle byMercedes-Benz.
These tires ha vebeen speciall yadap tedf or
use wit hthe control sy stems, e.g. ABS or
ESP
®,a nd ar emarke dasf ollows:
RMO = Mercedes-BenzO riginal
RMOE = Mercedes-BenzO riginal Extended
(run-flat tires onl yfor cer tain wheels)
RMO1 = Mercedes-Benz Original (onl ycer‐
ta in AMG tires)
Cer tain characteristics, e.g .handling, vehicle
noise emissions or fuel consum ption, may
ot herwise be adversely af fected. In addition,
whe ndriving wi thaload, tir edimension var‐
iations could caus ethe tires tocome into
contact wi th thebody and axle components.
This could result in damag etothe tires or the
ve hicle.
37 4
Wheels and tires