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WHEELS AND TYRES
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 dimensions,
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 cen-
tre to wheel contact surface against the
hub)
Related information
•
Tyres - dimensions (p. 336)
•
Tyres - approved tyre pressures (p. 443)
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 (168 mph).)
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 con-
stitutes a safety risk, with a risk of vehicle
damage, and it impairs the car's driving cha-
racteristics.
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. 443)
•
Wheel and wheel rim dimensions (p. 336)
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