winter tires MERCEDES-BENZ E CLASS 2018 Owners Manual

The sy st em ch ec ks th et ir ep re ssur ea nd th et ire
te mp eratur eoft he tires fi tted to th ev ehicle by
means of at ir ep re ssu re sensor.
Ne wt ir ep re ssur es ensors, e.g. in winter tires,
ar ea utomaticall yt aught-in th ef ir st tim et he ya re
driven.
The tir ep re ssur ea nd th et ir et emperature
appear in th em ultifunction display
( →
pag e2 06).
If th er eisas ubs ta ntia lp re ssure loss or if th e
tir et emperatur eise xc essive, aw arning will be
given: R
Vi ad ispla ym essages ( →
pag e4 26 ).R
Vi at he w wa rn ing lam pint he instrument
clus te r( →
pag e4 56).
It is th ed ri ve r's re sponsibility to se tt he tire
pressur etot he re commended cold tir ep re ssure
suitable fo rt he operating situation. Se tt he tire
pressur ef or cold tires using at ir ep re ssu re
ga uge. No te th at th ec or re ct tir ep re ssur ef or th e
cur re nt operating situatio nm us tf ir st be ta ught-
in to th et ir ep re ssur em onitoring sy st em. In mos tc ases, th et ir ep re ssur em onitoring sys‐
te mw il la utom atically updat et he ne wr eference
va lues af te ry ou ha ve ch anged th et ir ep re ssure.
Yo uc an ,h ow ev er ,a lso updat et he re fe re nce va l‐
ues by re st artin gt he tir ep re ssur em onitoring
sy st em manuall y( →
pag e3 61 ).
Sy st em limitations
The sy st em ma ybei mp air ed or ma yn ot function
in th ef ollowing situations: R
If th et ir ep re ssur eiss et incor re ctly.R
If th er eisas udden pressur el oss caused, fo r
ex ample, by af oreign object penetratin gt he
tire. R
If th er eisam alfunction caused by ano th er
ra dio signal source.
Mak es ur etoo bser ve th ef ollowing fur th er re la‐
te ds ubjec t: R
No te sont ir ep re ssur e( →
pag e3 56)
Checking th et ir ep re ssur ew it ht he tir ep re s‐
sur em oni to ri ng sy st em
Requ irement: R
The ignition is switched on. On-boar dc omputer:

Inde xS pee dr ating
ZR...Y 1
up to 18 6m ph (300 km/h)
ZR...(..Y) 1
ove r1 86 mp h( 300 km/h )
ZR 1
ove r1 49 mp h( 24 0k m/h)R
Specifying th es peed ra ting as th e" ZR" index
in tir ec ode 4 is optional fo rt ires up to
18 6m ph (300 km/h).R
If yo ur tir ec od e 4 includes "ZR" and th ere
is no speed ra ting 7 ,f ind out what th em ax‐
imum speed is from th et ir em anufacturer.R
If load-bearing index 6 and speed ra ting 7
ar einb ra ck et s, th em aximum speed ra ting of
yo ur tir eisa bo ve 18 6m ph (300 km/h). To
fi nd ou tt he maximum speed, ask th et ire
manufacturer. All-weather tires and winter tires
Inde xS pee dr ating
QM +S 2
up to 10 0m ph (160 km/h)
TM +S 2
up to 11 8m ph (190 km/h)
HM +S 2
up to 13 0m ph (2 10 km/h)
VM +S 2
up to 14 9m ph (240 km/h)
Wi nter tires bear th e M snowflak es ymbol
and fulfill th er equirements of th eR ubber Manu‐
fa cturer sA ssociation (RMA) and th eR ubber
Associatio nofC anada (RAC) re ga rd ing th et ire
traction on sno w.
Load index 8 : R
No specification given: st andar dl oad (SL)
tire R
"XL" or "Extra Load": ex tr al oa dt ir eorr ein‐
fo rc ed tire R
"Light Load": light load tire R
"C", "D", "E": al oad ra ng et hat depe nd so n
th em aximum load th at th et ir ec an car ry at a
cer ta in pressure
Definition of term sf or ti re sa nd loading
Ti re stru ctu re and ch aracteristics: describes
th en umber of la ye rs or th en umber of ru bber-
coated belts in th et ir ec on ta ct su rf ace and th e
tir ew all. These ar em ade of st eel, ny lon, poly‐
es te ra nd ot her materials.
Bar: metric unit fo rt ir ep re ssu re .
14 .5038 pounds per squar ei nc h( ps i) and
10 0k ilopasca l( kPa) is th ee qu ivalent of one bar.
DO T( Department of Tr anspo rt ation): DO T-
mar ke dt ires fulfill th er equirements of th e
US Department of Tr anspor ta tio n.
Av erag ew eight of th ev ehicle occupants: th e
numbe rofv ehicle occupants fo rw hi ch th ev ehi‐
cle is designed, multiplied by 15 0lb( 68 kg ).
1
"ZR" st ated in th et ir ec ode.2
Or "M+S M "f or winter tires Wheels and tires 37 1

Obser ve th ef ollowing when selecting, ins ta lling
and re placing tires:R
Onl yu se tires and wheels of th es ame type
(summer tires, winter tires, MOEx te nded
tires) and th es ame make.R
Onl yi ns tal lw heels of th es ame size on one
axle (lef ta nd ri ght).
It is onl yp ermissible to ins ta ll ad if fe re nt
whee ls iz eint he eve nt of af lat tir eino rd er
to driv etot he specialis tw or ks hop.R
Onl yi ns ta ll tires of th ec or re ct size ont ot he
wheels. R
Ve hicles with at ir ep re ssur em onitoring
sy st em: all moun te dw heels mus tbee qu ip‐
ped wit hf unctioning sensor sf or th et ire
pressur em onitoring sy st em.R
At te mp eratures belo w45° F(7° C), use win‐
te rt ires or all-seaso nt ires mar ke dM +S fo r
all wheels.
Wi nter tires bearing th e M snowflak es ym‐
bol in addition to th eM +S marking pr ov ide
th eb es tp ossible grip in wintr yr oad condi‐
tions. R
Fo rM +S tires, only use tires wit ht he same
tread. R
Obser ve th em aximum permissible speed fo r
th eM +S tires ins ta lled.
If th is is belo wt he ve hicle's maximum speed,
th is mus tbei ndicated in an appropriat el abel
in th ed ri ve r's fi eld of vision.R
Ru ninn ew tires at moderat es peed sf or th e
fi rs t60m iles (1 0 0k m).R
Re place th et ires af te rs ix ye ar satt he latest,
re ga rd less of we ar.R
When re placing with tires that do no tf ea‐
tu re ru n-flat ch arac t
eristics: ve hicles with
MOExtended tires ar en ot equipped wit ha
TIREFIT kit at th ef actor y. Equi pt he ve hicle
wit haT IREFIT kit af te rr eplacing wit ht ires
th at do no tf eatur er un- fl at ch aracteristics,
e.g .w inter tires.
Fo rm or ei nformation on wheels and tires, con‐
ta ct aq ualified specialis tw or ks hop.
Be sur etoa lso obse rv et he fo llowing fur th er
re lated subjects: R
No te sont ir ep re ssur e( →
pag e3 56) R
Ti re and Loading In fo rm atio np lacard
( →
pag e3 61 ) R
Ti re size designation, load-bea ri ng capacity,
speed ra ting and load ind ex ( →
pag e3 69)R
Ti re pressur et able ( →
pag e3 57 )
Note sonr ot ating wheels
q
WA RNING Risk of inju ry th ro ugh dif fe r‐
ent whee ls izes
Inter ch anging th ef ro nt and re ar wheels if th e
wheels or tires ha ve dif fe re nt dimensions
ma ys eve re ly impair th ed ri ving ch aracteris‐
tics.
The wheel brakes or wheel suspension com‐
ponent sm ay also be damaged.