2002 Saab 9-5 Owner's Manual - Page 230
2002 Saab 9-5 Manual
Page 230 highlights
230 Car care and technical information Flat spotting All tires get hot, especially on long journeys or when the car is driven hard. After the car has been parked with hot tires and the tires have cooled down, a flat spot can appear in the tire, where it is in contact with the ground. The same can occur if the car has not been moved for a long time. Flat spots can give rise to vibration that can be felt through the steering wheel, similar to that experienced when the wheels need balancing. Flat spots of this type disappear once the tires get hot again, usually after 10-15 miles (20-25 km) of driving at cruising speed. Tightening sequence, wheel bolts IB539 Removing the wheel cover WARNING If the car has been driven for several years exclusively with alloy wheels and steel wheels are now fitted, the bolt hole threads in the brake hubs should be cleaned before the thinner steel wheels are fitted. Grit, salt and rust can clog the inner threads making it impossible to achieve the correct tightening torque. IB1800
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