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|| 09 Wheels and tyres 09 316 • Check the tyre pressure when the tyres are cold. "Cold tyres" means that the tyres are at the same temperature as the outdoor temperature. The tyres will heat up and the tyre pressures will increase after driving for a few kilome- tres. • Tyre pressures which are too low will increase fuel consumption, reduce tyre service life and impair the car's han- dling. Driving with tyre pressures which are too low may lead to the tyres overheating and sustaining dam- age. Tyre pressures affect ride com- fort, road noise and steering. • Tyre pressure decreases over time, this is a natural phenomenon. Tyre pressure also varies depending on ambient temperature. Tyre pressure label G021830 The tyre pressure label on the driver side's door pillar (between frame and rear door) shows the tyre pressures for the car's recom- mended tyre dimensions. This is also speci- fied in the tyre pressure table, see Tyres - approved tyre pressures (p. 408). Related information • • Tyres - speed ratings (p. 318) • • • Tyres - tread wear indicators (p. 315) 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. 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 - approved tyre pressures (p. 408) 1 Only 17" wheel Thia |