Wheels and tyres
2999828 - 05/18 - EHG-0012-00EN
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The maximum permissible speed for a tyre (with full load-carrying capacity)
is indicated by the speed index (= SI). Together, load index and speed index
form the operating code of a tyre. This is an official component of the com-
plete, standardised dimensions description which appears on every tyre.
The information on the tyres must correspond to the specifications which
appear in the vehicle papers.
13.3 Tyre specifications
Description Explanation
215/70 R 15C 109/107
Q (example)
215 Tyre width in mm
70 Height-to-width proportion in percent
R Tyre design (R = radial)
15 Rim diameter in inches
C Commercial (transporter)
109 Load index code for single tyres
107 Load index code for twin tyres
Q Speed index (Q = 160 km/h)
13.4 Handling of tyres
Drive over kerbs at an obtuse angle. Otherwise the flanks of the tyres
may get pinched. Driving over a kerb at a sharp angle can damage the
tyre and result in it getting ruptured.
Drive over high manhole covers at a slow speed. Otherwise the tyres
may get pinched. Driving over a high manhole cover at high speed can
damage the tyre and result in it getting ruptured.
Check the shock absorbers regularly. Driving with poor shock absorbers
significantly increases wear.
In the event of an uneven thread wear, contact customer service.
Do not clean the tyres with a high-pressure cleaner. The tyres can suffer
serious damage within just a few seconds and rupture as a result.
Drive the tyres with care. Avoid braking sharply, revving up too strongly
and journeys on poor roads.
13.5 Tightening torque
Wheel rim Tightening torque
Fiat base vehicle
Steel wheel rim 15" 160 Nm
Steel wheel rim 16" 180 Nm
Alloy wheel rim 15" 140 Nm
Alloy wheel rim 16" 160 Nm
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