degree of wear.Ensurethat thedirection of rota‐
tionismaintained.
It is imperative to observe theinstructionsand
safetynotes on "Changing awheel" when doing
so.
Wheel size categories of wheels
The determined vehicle speed is displayedinthe
instrument clusterand is important forcontrol‐
ling thedriving safetysystems and driving sys‐
tems. The displayaccuracy of thespeedometer
and theodometerislegally prescribed.Determin‐
ing thespeed is dependent on thetiresize or the
rolling circumferenceofthe tires. The rimdiame‐
terisalwaysspecified in inches.
Forthis reason,the vehicle controlunitscan be
coded forthe following threewheel size catego‐
ries:
Wheel size category1
R
195/75R16C
R
205/75R16C
R
225/65 R16C
R
235/65 R16C
R
235/60 R17C
Wheelsize category2
R
225/75R16C
Wheelsize category3
R
225/75R16CFA
R
285/65 R16C RA
%
Mercedes-Benz recommends that youstay
within awheel sizecategorywhen changing a
tire. In this way, youavoid recoding thecon‐
trol units.
If youchangethe wheel size of your vehicle, for
instance when changing wheels forwinter opera‐
tion, checkitisassigned to thecorrect wheel
size category.Ifthe wheel size categorychanges,
youmusthave your vehicle's controlunitsreco‐
ded at aqualified specialistworkshop.
Otherwise, thedisplayaccuracy of thespeedom‐
eter and theodometerwillbeoutsidethe legally
prescribed tolerance. It mayalso be lower, i.e.
thecurrent road speed is then higher than the
speed shown on thespeedometer. If adeviation
is outside therangeoftolerance, driving safety
systems and driving systems maybeoperation‐
ally impaired or maydetect amalfunction and
switchthemselves off.
Information on thedirection of thetires' rota‐
tion
Tireswithaspecified direction of rotationhave
additional benefits,e.g.ifthereisarisk of hydro‐
planing. Youwill only gain these benefits if the
correct directionofrotation is observed.
An arrow on thesidewall of thetireindicates its
correct directionofrotation.
Youmay also install asparewheel againstthe
direction of rotation. Observe thetime restriction
on use as well as thespeed limitation specified
on thesparewheel.
Information on storing wheels
Observe thefollowing when storing wheels:
R
Wheels that have been removedshould be
stored in acool, dryand, if possible, dark
place.
R
Protect thetires from oil, grease and fuel.
Overviewofthe tire-changetool kit
Necessarytire-changetools mayinclude, for
example:
R
Jack
R
Wheel wrench
Vehicles with rear wheel drive
The tire-changetool kit is located in stowage
compartment 1 above thestepofthe do-driv‐
er's door and in thestowage compartment in the
footwell on thefront-passengerside.
312
Wheels and tires
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