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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. Do no
toverload thet ires byexceeding them axi‐
mum permissible load.
See also:
R Maximum permissible load on theT irea nd
Loading In form atio nplacar d(/pag e224 )
R Maximum tir eload (/ page228)
R Load index
Spee drating 7 7:
Specifies thea ppr ove dm 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. Wheels and tires
229
Aspec
tratio: relationship between tir eheight
and tir ewidthinp ercent.
Ti re pressure: pressureinside thet irea pplying
an outwar dforce toeve rysquar einc hoft he
tire's sur face. The tir epressur eiss pecified in
pounds per squar einc h( psi), in kilopascal (kPa)
or in bar .The tir epressur eshoul donlybec orrec‐
te dw hen thet ires ar ecold.
Ti re pressur eoncoldt ires: thet ires ar ecold
when thev ehicle has been par kedw itht he tires
out of direct sunlight foratl east thre eh our sand
th ev ehicle has been driven less 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.
Sid ew all: thep artoft he tir ebetwe en thet read
and thet ireb ead.
Special equipment weight: thec ombined
we ight of those optional extras that we igh more
th an ther eplaced standar dparts and mor ethan
5l bs (2. 3kg). These optiona lextras ,suc has
high-pe rformance brakes, le velc ontrol sy stem, a
ro of luggag erackorah igh-perform anc ebatter y,
ar en otincluded in thec urb weight and the
we ight of thea ccessories.
TIN (Tir eIdentification Number): auniqu eiden‐
tification number whic hcan be used byatire
manufacturer toidentify tires, fore xamp lefora
product recall, and thus identif ythe pur chasers.
The TIN is made up of them anufacturer identifi‐
cation code, tir esize, tir etype code and them an‐
ufacturing date.
Load-bearing index: thel oad-bearing inde x(also
load index) is acode that con tains them aximum
load-bearing capacity of atire.
Tr action: traction is ther esult of friction between
th et ires and ther oad sur face.
We ar indicator: narrow bars(tread wear bars)
th at ar edistributed overthe tir etread. If thet ire
tread 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‐
tions in avehicle. Maximum permissible pa
yload weight: nomi‐
nal load and luggag eload plus 150lbs (68 kg)
multiplied bythen umber of seats in thev ehicle. Changing
awheel Note
sons electing, installing and replacing
tires Yo
uc an ask fori nformation rega rding permit ted
wheel/tir ecombinations at aqualified specialist
wo rkshop. &
WARNING Risk of accident du etoincor‐
re ct size sofwheels and tires
If wheels and tires of thew rong size ar eused,
th ew heel brakes or wheel suspension com‐
ponents ma ybedamaged. #
Alwaysr eplace wheels and tires with
ones that fulfill thes pecification softhe
original part.
Fo rw heels, pa yattention tothef ollowing:
R Designation
R Type
R Perm issible wheel load
R Wheel of fset
Fo rtires, pa yattention tothef ollowing:
R Designation
R Manufacturer
R Type
R Load-bearing index
R Speed rating &
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. Wheels and tires
231
Tr
im element (care) .............................. 197
Tr ip
Displa ytotal dis tance ....................... 173
Menu (on-boar dcomputer) ............... 173
Tr ip computer
Re setting. ......................................... 174
Showing ............................................ 173
Tr ip distance ........................................ .173
Showing ............................................ 173
Tr ip odom eter
Re setting. ......................................... 174
Tr ip odom eter
see Trip dis tance
Tu rn signal light
Ad ditional tur nsignal light (all-
wheel driv evehicles) .......................... 91
Tw in co-driver's seat .............................. 71
Tw o-w ayradio telephone
see Mobile phone
Tw o-w ayradios
Fr equencies ...................................... 24 4
Ins tallation no tes. ............................. 24 4
Tr ansmission output (maximum )......2 44 U
Un locking setting .................................. .47
Un locking/locking
Swit ching automatic lockin gfea‐
tur eo n/off. ........................................ 50
Unl ockin gand opening front doors
from inside ........................................ .49
USB soc ketint he rear passenger
comp artment .......................................... 81
Using asun visor .................................... 98
Using kickdown .................................... 124V
Ve hicle ................................................... 11 0
Cor rect us e........................................ 26
Dat arecording ................................... 27
Diagno stics connection ...................... 25
Equipmen t......................................... .22
Limited Warrant y............................... .27
Locking (auto matic) ............................ 50
Locking/unlocking (emergency key) .. 50
Lo we ring .......................................... 238
Maintenance ...................................... 23
Notifying problems ............................. 26
Pa rking (s tart/s topb utton) .............. 14 0
Pa rking forane xtende dperio d........ 14 4 QR code
rescue car d.......................... 27
Qualified specialis tworks hop .............25
Ra ising ............................................ .235
Re gistration ........................................25
St artin g(in emer gency operation
mode) ............................................... 11 0
St artin g(start/ stop button) .............. 11 0
Switching on po wersupply (s tart/
st op button) ...................................... 109
Un lockin g(from inside) ...................... 49
Ve ntilating (co nvenience opening) ...... 60
Ve hicl ecom ponents that receive
and/or transmit radio wave s(decla‐
ra tio nofc onform ity) .............................. 24
Ve hicl ecom ponents whic hreceive
and/or transmit radio waves
Declaration of conformity ................... 24
Ve hicl edata
Ve hicle height ..................................2 55
Ve hicle lengt h................................... 255
Ve hicle widt h.................................... 255
Wheelbase ........................................2 55
Ve hicl edata memory
Electronic control units ...................... 27
Service pr ovider s............................... 28
Ve hicl edata storage
Event data recorder s.......................... 29
Ve hicl edimensions .............................. 255
Ve hicl eidentification number
see VIN
Ve hicl eidentification plate
EU general operating pe rmit num‐
ber .................................................... 24 5
Gross axle weight rating ................... 24 5
Pa int code ........................................ 24 5
Pe rm issible gross mass .................... 24 5
VIN ................................................... 24 5
Ve hicl eidentification plate
see Mode lseries
Ve hicl ekey
see Key
Ve hicl elevel
Lo we ring ........................................... 12 9
Ra ising .............................................. 12 9
Ve hicl em aintenance
see ASS YSTP LUS
Ve hicl eoperation
Outside theU SAor Canada ................22
Ve hicl etool kit .............................. 210, 212 Index
309