2006 MERCEDES-BENZ CL COUPE wheel bolts

382 Operation
Tyres
andwh eels
! Store tyres in a cool, dry place, preferably in
th e dark .Pr otec tth ety res fro moil, grease, pet-
rol and diesel fuel.
Do not clea nyo ur wheels with acidic wheel
cl eaners sin ce thesecould co rrode theh eads
of wh eel bolts.
Ty res with aspe cified direc tion of rotati on
ha ve additional bene fits, e.g. ifaq uaplan-
in go ccurs. Th eseadvantage scan onl ybe
enjoy edifthe tyres arefitted correspond-
ing to th edirec tion of rotation.
An arrow on th esidewall of the tyre indi-
ca tes its co rre ctdire ction of rot ation.
i Youm ay fi ta spare tyre* agains tth e direc-
ti on of rotation.
The MOExtend ed emer gencyru nn ing sys-
te me nabl esyou to conti nuedriving the ve-
hicl eeven when allair is lost from one or
mo re tyres.
You may only use theMO Extended run-flat
syste minconju nction with the tyr epres-
sure loss warning syste morthe tyrepres-
sure monitor*. Yo
uwi llfind note son drivin g with aflat
tyr ein the Pra ctical advice section
( = page 492).
Onlycorrect tyre pres sures whe nthe tyres
are cold.
Th ep ress ureo f wa rmtyre ssh ou ldonl ybe
co rrected if it is to olow fort he curre nt
op erating co nd itio ns .Warm tyres always
have highe r pressu res tha ncol dones.
You wil lfi nd a table of tyre pressure sfo r
dif ferent operati ngcond ition son thein-
side ofyour vehicl e’sfu el filler flap.
i Tyre pressure values giv enfor low loads are
mi nim um values whic hoff eryou good ride com-
fort charact eristic s.
You can, ho weve r, also usethe values forhi gh er
loads. Th ese are permissible and will not ad-
ver sely affec tth e running of the veh icle.Howev-
er , ride comfort will be impaired tosome degree.
Als ocheck thety re pressure of the spare
wheel*. Di
rect ion of rot ation MO
Exte nded run-flat syst em* Ty
re tread G
Risk of accident Plea
se keep in mind that:
! tyre grip decreases rapidly on wet roads
when the tread depth is lessthan 3mm.
You shou ldthus replace tyre sthat have
insuff icient trea d.
! Winter tyre ssh ou ldbe replac ed when
th etrea d dept his 4 mm or less because
ot he rwis e they no lo nger pro vide ade-
qua tegrip.
! tyre sca nbe subjec tto different level s of
we ar. You shouldthus regu larlych eck
th etread dept h andth e condi tion of the
trea dac ross theen tire width of alltyre s.
If ne cessary, turn thesteering wheel so
th at youc an seethe ty retrea dmore
ea sily.
Yo ucoul dothe rwise los econtrol of theve hi-
cl ea nd cause an accide ntdueto th ere-
duced gr ipof thetyre s on thero ad. Ty
re pres su res G
Risk of accident If
th e pr essur ein atyre drops repea tedly, in-
sp ect the tyre for forei gn objects andch eck
whether the ty reor valve are leaking. 216_R
E_2006-12a.book Seit e382 Montag, 2. Oktob er2006 12:06 12

387
Operation
Ty res andwh eels
Th ewh eels canbe inte rcha ng ed every
5, 000 to10
,00 0k mdepending on the de-
gree of tyre wea r,provided th attheveh icle
wh eelsareof thesa me size .Do not re-
verse the direction of tyre rotation.
Th e wea rpatter ns on the front andr ear
wh eels dif fer de pendi ngon th eoperating
condi tion s.Interchange the wh eelsbefore
too de finite awe arpattern ha sfo rm ed
on the tyr es.The front tyres typ ical ly wear
more on the oute rsh ou lder and th ere ar
tyres in the centr e.
Clea nthe contac t surfaces ofthew heel
an d the brake dis cthoroughly every time
aw heelisinter chan ged . Check the tyre
pr essure and reactivate th etyr epressure
monitor *if nece ssary. !
Elec tronic comp onent swill be locat edinthe
wheel if your ve hicle is fitt ed wit haty re pressure
monit or*.
Tyre fitt ing tools should notbe applied in the
ar ea of the va lve, as thisco uld dam agethe elec-
tr onic comp onent s.
Al ways have thety res replaced at a qualified
spe cialist workshop, e. g.a Mercede s-Be nz
Ser vice Centre. Int
erch angi ngthe wheels G
Risk of accide nt Only
interc hang eth efront andrear wheels if
th ey areof the same size .Th eha nd ling char-
ac teri stics of the vehic lema yotherwis ebe
af fe cted andy ou could endange ryo urse lfor
others. G
Risk ofaccide nt Ha
ve the tighten ing torq ueofthew heel
bo lts ch ecked afterevery wheel chang eat a
quali fied spe cial ist work shopwhich has the
necessa ryspe cialist know ledge and tools to
ca rry outth ew orkrequire d.Me rcede s-Be nz
re co mme ndsthat youuseaMerce de s-Be nz
Se rvic eCe ntre for this purpose .In particu-
lar, wor krele vant tosafety or on safety-re-
late d sys tems must be ca rried out at a
qu alified specialist workshop. G
Risk of acc ident The wheels cou
ldwork loose if the wheel
bo ltsa re not tightene dto a tightening
to rq ue of150 Nm.
Fo r saf etyre asons, Merced es-Ben z recom-
me ndsth at you on lyus ewheel bolts ofthe
co rrec tsize, andwhic h hav ebe en ap proved
for Merced es-Ben zveh icle s. 216_R
E_2006-12a.book Seit e387 Montag, 2. Oktob er2006 12:06 12

490 Practical advice
Fl
at tyre
6 Turn crank 3untilthe tyr eis ra ised a
max imum of3cm from thegr ound.
1 Centring pin
6 Undo th euppermost wh eelb oltco m-
plet ely.
6 In place ofthewh eel bo lt,sc rew ce n-
tri ng pin 1from the vehicl etool kit
in to the thread.
6 Und oth er em aining wh eelbo lts.
! Donot place wheelbo lts in sa nd or on adirty
surface. This could cause damage to thebolt and
wheel hubth reads.
6 Remo vethewh eel. Fi
ttin g a new wh eel
P40.10.4637-31 G
Risk of accident Repl
aceda ma ged orcorroded wheelbolts.
Never oilor grea sewheel bol ts. G
Risk of accident If
awheel hubthre ad is damaged, you must
no tdr ive the vehi cle an yfu rther. Co nsult a
qu alifie dspecial istwor ksho pw hich has the
necessary speci alistk no wled ge and tools to
carry ou t the wo rk required .Me rced es-Ben z
re co mm ends that you use aMe rcede s-Be nz
Se rvice Centre for th ispu rpose .In particu-
la r, wo rk rele vant to safety or on saf ety-re-
late dsy ste ms mu stbe carried ou tat a
qu alifie dsp ecialist wor ksho p. G
Risk of accident On
lyus ewheel bolts that havebe en de-
si gned fo rthe wheel and the vehi cle. Fo r
sa fety reas ons,Me rcede s-Be nz rec om-
men dsthat you onlyuse wheel boltsw hich
have been sp eciall yap prov ed for
Me rced es-Benz vehi cles .Ot he rbo ltsc ould
work loose.
Do not tight enthe wheel boltsc om pletely
whil ethe vehi cle is still jack edup.The vehi-
cl e co uld top ple off the jack. 216_
RE_2006-12a.book Seit e490 Montag, 2. Oktob er2006 12:06 12

491
Practical advice
Flat tyre
1 Wheel bo lts fo r 17 ''light-allo ywh eels
2 Wheel bol tsfor the "Minispare" emer-
ge ncy spare wheel*
3 Wheel bo lts fo r 18 ''light-allo ywh eels
an d larger
! Youmustuse wheel bolts 1or2 when fit-
ti ng 17'' wheels or the "Minispare" *eme rgency
sp are wheel. If you use different wheel bolts
wh en fit ting 17'' wheels or the "Minispare"*
emergency spare wheel, this co uld da magethe
br ak e sys tem.
i Wheel bol ts2 are supp lied wit hth e emer-
gen cyspare wheel (no twit h17' 'tyres ). 6
Clea nthe wheelan dwh eel hub contac t
su rfaces.
6 Push the "Minispar e"emer gencysp are
whe el*orspar ewhe el* onto the cen-
tring pi nan d press it onfully.
6 Screw inthe wh eelb olts and tighten
the mgently.
6 Uns crew the centr ing pin.
6 Screw inthelast wheel boltan dtig hten
it ge ntly. Lowering
the vehicle
6 Turn the cra nkof the jack anti-clock-
wise until the vehicle is once again
st and ing firmly on th eground.
6 Plac e the jack to oneside.
1 to5 whe elbo lts
6 Tighte nthe wheel bolts ev enly in a
cr os swise pattern in sequen ce1 to
5 . The tighte ning torq uemu stbe
15 0Nm . P40.10-4638-31
P40.10-4639-31
==216_R
E_2006-12a.book Seit e491 Montag, 2. Oktob er2006 12:06 12