Page 233 of 322

re
placement or alternat etires or wheels on
th ev ehicle that pr event theT PMS from func‐
tionin gproper ly.
Alw aysc hec kthe TPMS malfunction warning
lam pafter replacing one or mor etires or
wheels on your vehicle toensur ethat the
re placement or alternat etires and wheels
allo wthe TPMS tocontinu etofunction prop‐
er ly. The sy
stem checks thet irep ressur eand thet em‐
peratur eofthe tires ins talled tothev ehicle by
means of atirep ressur esensor.
Ne wt irep ressur esensors, e.g. in winter tires,
ar ea utomatically taught-in thef irst time they are
driven.
The tir epressur eand thet iret emperatur eappear
in them ultifunction displa y(/pag e160).
If th er eisas ubstantia llos soft irep ressure, a
wa rning is issued:
R via displa ymessages (/ page260)
R viathe 0077 warning lam pinthe instrument
clus ter
It is thed rive r's responsibility tosetthe tir epres‐
sur etot herecommended cold tir epressur esuit‐
able fort he operating situation. Se tthe tir epres‐
sur efor cold tires using atirep ressu regauge.
No tethat thec orrect tir epressure fort he cur rent
ope rating situatio nmustfirst be taught-in tothe
tir ep ressur emonitoring sy stem.
In mos tcases, thet irep ressur emonitoring sys‐
te mw illa utomatically updat ethe ne wreference
va lues af tery ou ha vechanged thet irep ressure.
Yo uc an,h owe ver,also updat ethe refere nce val‐
ues byrestartin gthe tir epressur emonitoring
sy stem manually (/ page210).
Sy stem limitations
The sy stem ma ybeimpaired or ma ynotfunction
in thef ollowing situations:
R ifth et irep ressur eiss etincor rectly
R ifth er eisas udden pressur eloss caused by a
fo re ign object penetrating thet ire, fore xam‐
ple
R ifth er eisam alfunction caused byano ther
ra dio signal source
Mak esuretoo bservethef ollowing fur ther rela‐
te ds ubject:
R Notesont irep ressur e(/pag e204) Checking
thet irep ressur ewitht he tir epres‐
sur em onitoring sy stem
Requ irements:
R The ignition is switched on
On-boar dcomputer:
4 Service 5
Tires
One of thef ollowing displa ysappears:
R The cur rent tir epressur eand tir etempera‐
tur eoft he individual wheels Instrument Displa
ywithc olor display
R The cur rent tir epressur efor eac hwheel Instrument Displa
ywithb lack and whit edisplay
R Tire pressure will be displaye dafter driving a
few minutes :the teach-in process of thes ys‐
te misn otyetc ompl ete. The tir epressur eare
already being monitored. #
Compar ethe tir epressur ewitht he recom‐
mende dtirep ressur efor thec urrent ope rat‐
ing condition .Obser vethen otes on tir etem‐
peratur e(/pag e204).
% The
values displa yedint he multifunction dis‐
pla ym aydeviat efromt hose of thet irep res‐
sur egaug east heyr efer tosea le vel.At high
altitudes, thet irep ressur evalues indicated
by ap ressur egaug earehigher than those
shown bytheo n-boar dcomputer .Inthis
case, do no treduce thet irep ressure. Wheels and tires
209
Page 234 of 322

Mak
esuretoo bservethef ollowing fur ther rela‐
te ds ubject:
R Notesont irep ressur e(/pag e204)
Rest arting thet irep ressur emonitor
Requ irements:
R The recommended tir epressur eisc orrectly
se tfor ther espectiv eoperating condition on
eac hoft he wheels (/ page204).
R Re
star tt he tir epressur emonitoring sys‐
te mi nthe following situations:
- The tir epressur ehaschanged.
- The wheels or tires ha vebeen changed or
newl yins talled.
On-boar dcomputer:
4 Service 5
Tires #
Scroll down in them enu.
The Use Current Pressures as New Refer-
ence Values messageappear sinthe multi‐
function displa y. #
Con firm them essag etoinitiat earestart.
The Tire Press. Monito rRestarted message
appear sinthe multifunction displa y.
Cur rent wa rning messages ar edeleteda nd
the 0077 yello ww arning lam pgoes out.
Af tery ou ha vedriven foraf ewminutes, the
sy stem checks whe ther thec urrent tir epres‐
su resa rewithin thes pecified range. The cur‐
re nt tir epressures ar ethen accep tedasr ef‐
erence values and monitored.
Mak esuretoo bservethef ollowing fur ther rela‐
te ds ubject:
R Notesont irep ressur e(/pag e204) Ra
dio-equipment appr oval of thet irep res‐
sur em onitoring sy stem
Ra dio equipment appr oval numbers Countr
yRadio equipment appr oval
number
Canada IC: 4008C- TSSRE4A
Ope ratio niss ubject tothef ollow‐
ing tw oconditions:
(1) this device ma ynotcause
harmful inter fere nce, and
(2) this device mus tacce ptany
inter fere nce received, including
inter fere nce that ma ycause
undesired operation.
Mexic oM odel:TSSRE4A &TSSSG4G6,
IFETEL: RLVHUTS17-0806
US AF CC ID:YGO TSSRE4A
Thi sd evice complie swithP art15
of theF CC Rules. Operation is
subjec ttothefollowing tw ocon‐
ditions: (1) this device ma ynot
cause harmful inter fere nce, and
(2) this device mus tacce ptany
inter fere nce received, including
inter fere nce that ma ycause
undesired operation.
WA RNING: An ychanges or modifi‐
cation no texpressly appr ovedby
th ep arty responsible forc ompli‐
ance could void theu ser's author‐
ity tooperat ethis equipment. Loading the
vehicle Ti
re and Loading Information placard &
WARNING Risk of an accident whe ndriv‐
ing wi than ove rloaded tire
Overloaded tires ma yoverheat and bur stas a
consequence. Overloaded tires can also
impair thes teering and handling characteris‐
tic sa nd lead tobrak efailure. #
Obser vethel oad rating of thet ires. #
The load rating mu stbe at leas thalf the
gros saxle weight rating of thev ehicle.
Mercedes-Ben zrecommends youu se
th el oad-bearing index, whic hisgiven in
th ev ehicle documents. 210
Wheels and tires
Page 235 of 322

#
Nevero verload thet ires by exc eeding
th em aximum load. Onl
yvehicles wit hagross vehicle weight of less
th an 10,000 lbs (4,53 6kg) ha veaT irea nd Load‐
ing In form atio nplacar dont he B-pillar on thed riv‐
er's side. 1
Tire and Loadin gInforma tionp lacard %
The dat
ashown in thei llustration is sample
data.
The Tire and Loadin gInforma tionp lacar dshows:
R The maximum number of seats indicates the
maximu mnumber of occupants permitted to
tr ave lint hevehicle.
R The maximum permissible load equals the
gros sweight of all vehicle occupants, thel ug‐
ga ge and cargo.
R The recommended tir epressures forc old
tires. The recommended tir epressures apply
to them aximum permissible load and up to
th em aximum permissible speed of thev ehi‐
cle.
Also obser vethef ollowing information:
R The information about permissible weight son
th ev ehicle identification plat e(/pag e231).
R The information about tir epressur eont he
tir ep ressur etable .
Ad ditional related subjects:
R Determ inin gthe maximum load
(/ page211).
R Notesont irep ressur e(/pag e204). De
term ining them aximum load The
following steps ha vebeen de veloped as
re qu ired of all manufacturer sunder Title 49,
Code of U.S. Federal Regulations, Part57 5in
accordance wit hthe "National Traf fica nd Mo tor
Ve hicle Saf etyA ct of 1966." #
Step1:loca tethes tatement, "The combined
we ight of occupant sand cargo should ne ver
exc eed XXX kgor XXX lbs." on theT irea nd
Loading In form atio nplacar dofy ourvehicle. #
Step2:de term ine thec ombined weight of
th ed rive ra nd passenger sthat will be tra vel‐
ing in your vehicle. #
Step3:subtract thec ombined weight of the
driver and passenger sfromX XXkgor
XXX lbs. #
Step4:th eresulting figur eequals thep er‐
missible amount of cargo and luggag eload
capacity .For example, if the" XXX" amount
equals 1,400 lbs and ther ew ill be five 150lb
passenger sinyourvehicle, thea mount of
av ailable cargo and luggag eload capacity is
65 0lbs (1,40 0–750 (5 x150) =650 lbs). #
Step5:de term ine thec ombined weight of
luggag eand cargo being loaded on thev ehi‐
cle. Fors afet yr easons, this we ight mus tnot
exc eed thec argo and luggag eload capacity
calculated in step 4.
Even if youh avec alculated thet otal load care‐
full y,yo us houl dstillm akes uret hat them axi‐
mum permissible gross weight and them aximum
gross axle weight rating of your vehicle ar enot
exc eeded. Information fort his can be found on
th ev ehicle identification plate. #
Weigh thel aden vehicle, including driver ,pas‐
senger sand load, on asuitable vehicle weigh‐
bridge.
The measured values mus tnotexc eed the
maximu mpermitted values lis tedont hevehi‐
cle identification plate.
Ad ditional related subjects:
R Sample calculation ford eterminin gthe maxi‐
mum load (/ page212 )
R Tire and Loadin gInforma tionp lacard
(/ page210)
R Tire pressur etable
R Vehicle identification plate Wheels and tires
211
Page 236 of 322

Sample calculation
ford eter mi ning them axi‐
mu mload The
following table has examples of ho wtocalcu‐
la te tota la nd cargo load capacities wit hvarying
seatin gconfigurations and dif fere nt number sand
size sofo ccupants. The following examples use a
maximum load of 1,500 lbs (680 kg).This value is
fori llustrativ epurposes on ly.Mak esurey ou
ar eu singthe actual load limit fory our vehicle
st ated on your vehicle's Tire and Loadin gInfor‐
mation pl acard( / pag e210).
Th eh igher thew eight of all theo ccupants, the
smaller them aximum load forl ug gage.
Ste p1 Example
1E xamp le 2
Combine dmaximum weight of
occupant sand load (dat afrom
th eT irea nd Loading In form a‐
tio np lacard) 15
00 lbs (680 kg)1 500 lbs (680kg) Ste
p2 Example
1E xamp le 2
Numb er of people in thev ehicle
(driver and occupants) 51
Distribution of theo ccupant sFront:2
Re ar:3 Fr
ont :1
We ight of occupant sO ccupant 1:150lbs (68 kg)
Occupant 2: 180lbs (82 kg)
Occupant 3: 160lbs (7 3kg)
Occupant 4: 140lbs (63 kg)
Occupant 5: 120lbs (5 4kg) Occupant 1: 200 lbs (9
1kg)
To talw eight of all occupant s750 lbs (340 kg)2 00 lbs (91kg) Ste
p3 Example
1E xamp le 2
Pe rm issible load (maximum
gross vehicle weight rating from
th eT irea nd Loading In form a‐
tio np lacar dminus theg ross
we ight of all occupants) 15
00 lbs (680 kg)00F875 0lbs
(340 kg)=7 50 lbs (340 kg)15
00 lbs (680 kg)00F8200 lbs
(9 1k g)=1 300 lbs (589 kg) 212
Wheels and tires
Page 237 of 322

Ti
re labeling Overvie
woftirel abeling 1
Uniform Ti reQuality Grading Standards
(/ page213 )
2 DOT(Depa rtment of Transpor tation), (TIN)
Ti re Identification Number (/ page214 )
3 Maximum tirel oa d( /pa ge214)
4 Maximum tirep ressur e(/ page 215)
5 Manufac turer
6 Characteristics of thet ire( /pag e215 )
7 Tire size designation, load-beari ng capacity,
speed rating and load ind ex (/pag e215 )
8 Tire name
% The da
tashown in thei llustration is sample
data. Information on tir
equality grades Ac
cording tother equirements of theU .S.
Depa rtment of Transpor tation's "Uni form Tire
Quality Grading Standards" tir emanufacturers
mus tgrade their tires using thef ollowing three
per form anc efactors: 1
Tread weargrade
2 Traction grade
3 Temp eratur egrade
% The dat
ashown in thei llustration is sample
data.
% This grading is no
tlegall yprescribed forC an‐
ada,b ut specified in mos tcases anyw ay.
Tr ead weargrade
The tread wear grade is acomparativ egrading
based on tread wear grade testsc onducted
under contro lled condition sonaspecified U.S.
Depa rtment of Transpor tatio nt esttrack .F or
ex ample, atireg raded 150w ould wear one and
one-half times as well on theg ove rnment test
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 epractices and
dif fere nces in road characteristic sand climate
conditions.
Tr actio ngrade &
DANG ER Risk of acciden tdue toinade‐
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. #
Alwaysa dap tyour driving stylea nd
driv eatas peedtosuit thep reva iling
traf fica nd weather conditions. *
NO
TEDama getothed rive trai nfrom
wheelspin #
Avoid wheelspin. The traction grades
–fromh ighes ttolowest –
ar eA A, A, Band C. These grades relat etot he Wheels and tires
213
Page 238 of 322

tire's ability
tocome toas tandstill on awetpave‐
ment under controlle dconditions on aspecified
U. S. go vernment test sur face mad efroma sphalt
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‐
lished forat iret hat is properly inflated and
no to verloaded. Excessiv espeed, underinfla‐
tion, or excessiv eloading, either separatel yor
in combination, can cause excessiv eheat
build-up and possible tir efailure. #
Obser vether ecommended tir epres‐
sures and regular lych eckt he tir epres‐
sur eofa ll tires including thes pare
wheel. #
Adjus tthe tir epressur easn ecessar y. The
temp eratur egrades ar eA(highes tgrade), B
and C. These relat etoat ire'sresis tance toheat
and its ability torelease heat on aspecified test
wheel in laborator ytests under cont rolled condi‐
tions. Sus tained high temp eratures can cause the
material of thet iretod egenerat eand reduce tire
life. In addition, excessivel yhigh temp eratures
can lead tosudden tir efailure. Grade Crefer sto
ap erform anc ewhicha ll passenger vehicle tires
mus texhibit, accordin gtotheU.S. Depa rtment
of Transpor tation's requ irements. Information on DO
Tand TIN (Tir eIdentifica‐
tion Number) U.
S. tir eregulations indicat ethat everyt irem an‐
ufacturer or retreade rmustimp rint aT IN in or on
th es ide wall of eac htirep roduced. %
The dat
ashown in thei llustration is sample
data. The TIN is
aunique identification number fort ires
and consists of thef ollowing components:
R DOT(Department of Transportation): tire
symbol 1indicates that thet irec omplies
wit hthe requ irements of theU .S. Depa rtment
of Transpor tation.
R Manufacturer identi fication code: manu‐
fa cturer identification code 2prov ides infor‐
matio nabout thet irem anufacturer .New tires
ha ve ac odew itht wo symbols. Retreaded
tires ha veac odew ithf our symbols.F or fur‐
th er information about retreade dtires, see
(/ page 218).
R Tire size: identifier 3describes thet ires ize.
R Tire type code: tiret ypec ode 4can be
used bythem anufacturer as acode to
describe specific characteristic softhe tire.
R Dat eofm anufactu re:date of manufacture
5 prov ides informatio nabout thea geof a
tire. The 1s tand 2nd number sindicat ethe
calendar week and the3 rdand 4t hnumbers
indicat ethe year of manufactur e(e.g. "3208"
re fers to the3 2ndw eek of they ear 2008). Information on maximum tir
eload %
The dat
ashown in thei llustration is sample
data.
Maximum tir eload 1isthem aximum permissi‐
ble weight forw hichthe tir eisa pprove d.
Do no toverload thet ires by ex ceeding them axi‐
mum permissible load. The maximum permissible
load can be found on thev ehicle's Tire and Load‐
ing In form atio nplacar dont he B-pillar on thed riv‐
er's side (/ page210). 214
Wheels and tires
Page 239 of 322

Information on maximum tir
epressu re %
The dat
ashown in thei llustration is sample
data.
Maximum permitted tir epressure 1,whichis
permitted fort he tires mus tnotbe exceeded.
Exception: whe nusing the2 25/ 75R16C
12 1/120R (122L) tires as aspare wheel on the
re ar axle of Supe rSinglev ehicles wit hadista nce
limit of 62 mi (100 km) and speed limit of 34 mph
(55 km/h). Information on tir
echaracteristics %
The dat
ashown in thei llustration is sample
data.
This information describes thet ype of tir ecord
and then umber of la yers in side wall1 and
under tir etread 2. Ti
re size designation, load-bearing capacity,
speed ratin ga nd load index &
WARNING Risk of inju rythro ugh exceed‐
ing thes pecified tir eload rating or the
permissible speed rating
Exceeding thes pecified tir eload rating or the
permissible speed rating ma ylea dtot ire
dama geand tothet 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. 1
Prefixing letter
2 Nominal tir ewidthinm illimeters
3 Aspect ratio (i npercent)
4 Tire code
5 Rimd iame ter
6 Load-bearing index
7 Speed rating
8 Loadind ex
% The dat
ashown in thei llustration is sample
data.
Fu rther information about reading tir edatac an
be obtaine dfroma nyqualified specialis twork‐
shop.
Prefixing letter 1 1:
R "LT": light truc ktires in accordance wit hUS
manufacturer standards.
R "C": tires forc ommercial usage in accordance
wit hE uropean manufacturer standards.
Aspect ratio (i npercent) 3 3:
The size ratio betwee nthe tir eheight and tire
widt hand is shown in percent (tir eheight divided
by tirew idth ).
Ti re code 4 4(tiretype):
R "R": radial tire
Rim diam eter 5
5:
The diame teroft he bead seat (no tthe diame ter
of ther im flange). The rimd iame teriss pecified in
inches (in).
Load-bearing index 6 6:
Numerical code whic hspecifies them aximum
load-bearing capacity of atire( "91" equals, e.g.
13 56 lb (6 15kg)).
The tir eload-bearing capacit ymustbeatl east
half theg ross axle weight rating of thev ehicle. Wheels and tires
215
Page 240 of 322

Do no
toverload thet ires by ex ceeding them axi‐
mum permissible load.
See also:
R Maximum permissible load on theT irea nd
Loading In form atio nplacar d(/pag e210)
R Maximum tir eloa d( /pag e214 )
R Load index
Speed rating 7 7:
Specifie sthe appr ovedm aximum speed of the
tire.
% An electroni
cspeed limiter pr events your
ve hicle from exceeding aspeed of 130m ph
(2 10 km/h).
Ensu rethat your tires ha vether equired speed
ra ting .You can obtain information on the
re qu ired speed rating at an au thorized Mercedes-
Benz Center.
Summer tires Inde
xS peedrating
LU pto75mph (120 km/h)
MU pto81mph (130 km/h)
NU pto87mph (140 km/h)
PU pto93mph (150 km/h)
QU pto100mph(160k m/h)
RU pto106mph(170k m/h) Summer
,all-season and winter tires Inde
xS peedrating
LM +S1
Upto75 mph(120k m/h)
MM +S1
Upto81 mp h(130k m/h)
NM +S1
Upto87 mph(140k m/h)
PM +S1
Upto93 mph(150k m/h)
QM +S1
Upto100m ph (160 km/h)
RM +S1
Upto118m ph (170 km/h) 1
:or" M+S 004D"f or winter tires
Wi nter tires ar emarke dw itht he 004D snowflake
symbol and fulfill ther equirements of theR ubber
Manufacturer sAssociation (RMA) and theR ubber
Associatio nofCanada (RAC) rega rding thet ire
traction on sno w. Load index
8 8:
R "Light load": light load tires
R "C": commercial tires Information on definitions (tires and load‐
ing)
Ti re stru ctu reand characteristics: describes
th en umber of la yers or then umber of rubber-
coated la yers inthet iret read and thet irew all.
These ar emade of steel, nylon, pol yester and
ot her materials.
Bar: metric unit fort irep ressu re.
14 .5038 pounds per squar einc h( psi) and
10 0k ilopascals (kPa) ar ethe equivalent of 1bar.
DO T(Department of Transportation): DOT
mar kedt ires fulfill ther equirements of the
U. S. Depa rtment of Transpor tatio n.
Av erag eweight of vehicl eoccupants: the
number of occupants forw hichthe vehicle is
designed multiplied by150lbs (68 kg).
Un ifor mT ireQ uality Grading Standards: auni‐
fo rm standar dtog rade theq uality of tires with
re ga rdstot read quality ,tiret raction and temp er‐
atur echaracteristics. The quality grading assess‐
men tism adebythem anufacturer in accordance
wit htests pecifications of theU .S. go vernment.
The quality grade of atireisi mprinted on the
side wall of thet ire.
Re commended tir epressu re:ther ecommen‐
ded tir epressur eist he pressur especified fort he
tires ins talled on thev ehicle at thef actor y.
The Tire and Loadin gInforma tionp lacar dcon‐
ta ins ther ecommended tir epressures forc old
tires, them aximum permissible load and the
maximu mpermissible vehicle speed.
The tir epressur etable con tains ther ecommen‐
ded tir epressu resf or cold tires under various
operating conditions, i.e. load and/or speed of
th ev ehicle.
Increased vehicl eweight due tooptional
equipment: thec ombined weight of all standard
and optional equipmen tavailable 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 AxleW eightRating): GAWR is the
gross axle weight rating .The actual load on an
axl em ustn eve rexceed theG ross Axle Weight 216
Wheels and tires