2012 MERCEDES-BENZ M-Class trailer

Incr
ease dvehicle weight dueto
opt ional equipm ent
This isthecom binedweight ofall standar d
and optionalequipm entavailable forthe
veh icle,regar dless ofwhet heritis act ually
ins talle don theveh icle ornot. Rim
This isthepart ofthew heel onwhich thetire
is mounted. GAWR
(Gross AxleWeight Rating)
The GAWR isthe maximum permissible axle
weight. Theactual loadonanaxle must never
exceed thegross axleweight rating.The
gross axleweight ratingcanbefound onthe
vehicle identification plateonthe B-pillar on
the driver's side. Speed
rating
The speed ratingispart ofthe tire
identification. Itspecifies thespeed rangefor
which thetire isapproved. GTW
(Gross Trailer Weight)
The GTW isthe weight ofatrailer including
the weight ofthe load, luggage,accessories
etc. onthe trailer. GVW
(Gross Vehicle Weight)
The gross vehicle weightcomprises the
weight ofthe vehicle including fuel,tools, the
spare wheel, accessories installed,
occupants, luggageand thedrawba r
noseweight, ifappli cable. Thegross vehicle
weight mustnotexceed thegross vehicle
weight ratingGVWR asspecified onthe
vehicle identification plateonthe Bpillar on
the drive r'sside. GV
WR (Gross Vehicle Weight Rating)
The GVWR isthe maxim umperm issible gross
weight ofafully loaded vehicle(th eweight of
the vehic leinc luding allacc essor ies,
occ upant s,fuel, luggage andthedrawbar
nos eweight ,if applicable). Thegros svehic le
weight rating isspec ified onthe vehic le
ident ification plateonthe B-pillar onthe
drive r'sside. Max
imumload edvehicle weight
The maximum weight isthesum ofthecur b
weight oftheveh icle,th eweight ofthe
acc esso ries,th eto tal load limit andthe
weight oftheopt ionalequipm entinstalle dat
th efac tory. Kilopa
scal(kPa)
Met ricunit fortirepres sure. 6.9kP ais the
equivale ntof1psi .An other unit fortire
pres sure isbar. Thereare 100k ilopasc als
(kPa) to1b ar. Load
index
In addit iontotheload beari ngind ex,th eload
ind exmay alsobeimpr inted on thesidew all
of thetir e. This spec ifiesthe load bearing
capacity moreprecisely. Curb
weight
The weight ofavehicle withstandard
equipment includingthemaximum capacity
of fuel, oiland coolant. Italso includes theair-
condition ingsystem andoptional equipment
if these areinstalled inthe vehicle, butdoes
not include passengers orlugga ge. 372
Defin
itionofterm sfor tires andloadingWheels and tires

Trac
tion
Tra ctio nis the resultof frictio nbe twe enthe
tire sand theroadsu rfa ce. TWR
(Tongue We ight Ratin g)
The TWRsp eci fiesthe maxim um permi ssible
we ight tha tthe ball coupling ofthe trailer tow
hitch cansupport. Tread
wearindicators
Narrow bars(tread wearbars) thatare
distributed overthetire tread. Ifthe tire tread
is level withthebars, thewear limitof1
/ 16 in
(1.6 mm) hasbeen reached. Occupant
distribution
The distribution ofoccupants inavehicle at
their designated seatingpositions. Total
loadlimit
Rated cargoandlugga geload plus
68 kilograms (150lbs)times thevehicle's
designated seatingcapacity. Changing
awhee l Fl
at tire
The "Brea kdown assistance" section
(Y pag e329) contains informationandnotes
on how todea lwith afla ttire. Italso provides
inst ruct ions onchan gingawheel ormoun ting
the spare wheel/ emergencyspare wheel. Inter
chang ingthewheels G
WARN
ING Rotat
efro ntand rear wheels onlyifthe tires
are ofthe same dimen sion. If
your vehic leisequipped withmixed-s ize
tir es (diff eren ttire dimen sionsfro ntvs. rear),
tir erot ation isnot possible . G
WARN
ING Have
thetightening torque chec kedafter
chan gingawheel. Thewheels couldcome
loose ifthe yare not tightenedtoator que of
110 lb-ft(150 Nm).
Only usegenuin eMerc edes- Benzwheel bolts
specified foryour vehicle's rims.
The wear pattern son the front andrear tires
differ, depending onthe operating conditions.
Rotate thewheels beforeaclear wearpattern
has formed onthe tires. Front tirestypically
wear more onthe shoulders andtherear tires
in the cent er.
If your vehicle's tireconfiguration allows,you
can rotate thewheels according tothe
intervals inthe tire manufacturer's warranty
book inyour vehicle documents. Ifthis isnot
availa ble,thetires should thenbereplaced
every 3000to6000 miles
(5000 to10,000 km),orearl ierifthe tire wea r
requ iresthis. Donot change thedirection of
whee lrotation.
Cle anthe contact surfacesofthe whee land
the brake discthoroug hlyevery timeawhee l
is interchanged .Check thetire pressures.
Inform ationonchanging awheel and
mounting thespare wheel (Ypage 333).
! Onvehicles equippedwith atire pressure
monitor, electronic componentsare
located inthe wheel.
Tire-mountin gtools should notbeused
near thevalve. Thiscould damage the
electronic components.
Always havethetires changed ataqual ified
specialist workshop, e.g.anauthorized
Mercedes-Ben zCent er. 374
Changing
awhee lWheels and tires

All
mod els Gr
ound clearance 8.
0in (20 2mm ) Tu
rning circle 38
.7ft(11 .80m) Ma
xim um roof
load Max
imum 220lb
(10 0kg ) Tr
ailer towhitch Mou
nting dim ension s G
WAR
NING On
lyhave atrailer tow hit ch retrofitted ata
qualif iedspec ialist workshopwhic hhas the
ne ces sary specialist knowled geand tools to
car ryout thework required .Mercedes- Benz
recom mends thatyouuseanauthorized
Mercedes- BenzCenter forthis purpose. In
particular, workrelevant tosafety oron
safety-r elatedsystems mustbecarried outat
a qualified specialist workshop.
! Ifyou have atrailer towhitchretr ofitt ed,
changes tothe cooling systemanddrive
train maybeneces sary,depending onthe
vehicle type.
If you have atrailer towhitchretr ofitt ed,
observe theanchor agepoint son the
chassis frame. An
chorage pointsforthe trailer towhitch
(example)
: Anchorage points
; Rear axlecenterline Tr
ailer loads
Missing valueswerenotavailable attime of
going toprint . All
models Perm
issible trailer load,
unbra ked Perm
issible trailer load,
brak ed34 Maxim
umdrawbar
noseweig ht35 Perm
issible rearaxle
load when towing atrail er 34
At ami nim um gradient-c limbi ngcap ability of12% fromastandstill.
35 The drawba rnoseweight isnot included inthe trailer load. Tr
ailer towhitch
391Technical data Z