BMW Z4 Roadster Owner's Handbook Manual page 271

Safety notes
WARNING
If the tyres are damaged, the tyre inflation pres‐
sure may be reduced, which in turn could
cause you to lose control of the vehicle. There
is a danger of accidents. If you suspect tyre
damage while you are driving, immediately re‐
duce speed and bring the vehicle to a stop.
Have the wheels and tyres checked. To do so,
carefully drive to a Service Partner of the manu‐
facturer or another qualified Service Partner or
a specialist workshop. If necessary, have the
vehicle towed or transported there. Do not re‐
pair damaged tyres, but have them replaced in‐
stead.
WARNING
Tyres can become damaged by running over
obstacles, for example kerbs or road damage,
at high speed. Larger wheels have a smaller
tyre cross-section. The smaller the tyre cross-
section, the higher the risk of tyre damage.
There is a danger of accidents and damage to
property. If possible, drive around obstacles or
drive over them slowly and carefully.
Age of tyres
Recommendation
Irrespective of the tyre tread depth, change tyres
after 6 years at the latest.
Date of manufacture
The date of manufacture of the tyre is indicated
on the tyre sidewall.
Designation Date of manufacture
DOT ... 3818 38th week of 2018
Wheels and tyres
Online Edition for Part no. xxx - X/18
Replacement of wheels and
tyres
Fitting and balancing
Have the wheel fitted and balanced by a Service
Partner of the manufacturer or another qualified
Service Partner or a specialist workshop.
Wheel/tyre combination
General
Information on the correct wheel/tyre combina‐
tion and rim designs for the vehicle can be ob‐
tained from a Service Partner of the manufac‐
turer or another qualified Service Partner or a
specialist workshop.
Safety notes
WARNING
Wheels and tyres that are not suitable for your
vehicle can damage parts of the vehicle. For ex‐
ample they could come into contact with the
bodywork on account of their dimensional tol‐
erances, despite having the same nominal size.
There is a danger of accidents. The manufac‐
turer of the vehicle recommends using wheels
and tyres that have been categorised as suita‐
ble for the respective vehicle type.
WARNING
Mounted steel wheels can lead to technical
problems, for example wheel studs may work
loose or brake discs may be damaged. There is
a danger of accidents. Do not install steel
wheels.
MOBILITY
271