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09 Wheels and tyres
09
336
Wheel and wheel rim dimensions
Wheel and rim dimensions are designated in
accordance with the examples in the table
below.
The car has an approval for the complete
vehicle. This means that certain combinations
of wheel (wheel rim) and tyre are approved.
Wheels (rims) have a designation of dimen-
sions, for example: 7Jx16x50.
7 Rim width in inches
J Rim flange profile
16 Rim diameter in inches
50 Off-set in mm (distance from wheel
centre to wheel contact surface
against the hub)
Related information
•
Tyres - dimensions (p. 336)
•
Tyres - approved tyre pressures (p. 439)
Tyres - dimensions
The car's tyres have a certain dimension, see
the examples in the table below.
The dimensions are stated on all car tyres.
Example of designation: 215/55R16 97W.
215 Tyre width (mm)
55 Ratio between tyre wall height and
tyre width (%)
R Radial ply
16 Rim diameter in inches (")
97 Codes for the maximum permitted
tyre load, tyre load index (LI)
W Speed rating for maximum permitted
speed, speed rating (SS). (In this
case 270 km/h.)
WARNING
19-inch wheels must never be used on
cars that are not equipped with the R-
Design or Sport chassis options. The use
of 19-inch wheels on cars with standard
chassis constitutes a safety risk, with a
risk of vehicle damage, and it impairs the
car's driving characteristics.
The car has an approval for the complete
vehicle with certain combinations of wheel
rims and tyres.
Related information
•
Tyres - speed ratings (p. 337)
•
Tyres - load index (p. 337)
•
Tyres - direction of rotation (p. 333)
•
Tyres - maintenance (p. 332)
•
Tyres - approved tyre pressures (p. 439)
•
Wheel and wheel rim dimensions (p. 336)
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