User Guide

Communications breakdown 245
Tyres and wheels
Please note in particular:
 Use only tyres and wheels of the same
type and make.
 Fit only the correct type of tyre on each
wheel.
 Where a car has the same size of wheel
at the front and rear, only switch tyres
between the front and rear axles (RF to
RR; LF to LR).
 Fit new tyres on the rear wheels.
 Break in new tyres at moderate speeds
for the first 100 kilometres.
 Check tyres and wheels regularly for
damage. Damaged wheels could result in
a loss of pressure from and damage to
the tyres.
 Do not use tyres with an excessively low
tread. Below a tread depth of
3 millimetres, grip will deteriorate
sharply on wet roads. Summer tyres with
a tread depth of 3 millimetres and win
ter tyres with a tread depth of less than
4 millimetres must therefore be re
placed without fail.
 Change the tyres after no later than six
years, irrespective of the level of wear.
The same applies to the spare wheel.
>Note!
Store tyres in a cool, dry and preferably
dark place when not fitted to the car. Pro
tect the tyres against oil, grease and fuel.
Never clean the tyres with highpressure
equipment. Your tyres could otherwise be
damaged.
Operating safety and roadworthiness
Tyres are a particularly important aspect
of the car's operating safety and road
worthiness. For this reason, check the
tyre inflation pressure, tyre tread and
tyre condition at regular intervals.
A tyre specialist shop or a qualified spe
cialist workshop, such as a smart center,
will be able to supply further information
on:
 tyre load capacity (LI, load index),
 speed index (maximum permitted oper
ating speed of a tyre),
 tyre age,
 the causes and consequences of tyre
wear,
 measures to take in the event of tyre
damage,
 tyre types for particular regions, oper
ating areas or operating conditions of
the vehicle.
 scope for converting tyres, etc.