● High speeds and overloading of the vehicle may cause the tyres to heat up to such an extent that the tyre bursts,
leading you to lose control of the vehicle.
● If the tyre pressure is too low or too high, the tyres will wear prematurely and the vehicle will not handle well.
● If the tyre is not flat and it is not necessary to change the wheel immediately, drive at low speed to the nearest
qualified workshop and check and correct the tyre pressure (→ Tyre pressure).
Introduction
The tyres are the most used and most underestimated parts of a vehicle. Tyres are very important as the narrow tyre
surfaces are the only contact between the vehicle and the road.
The service life of tyres is dependent on tyre pressure, driving style, handling and correct fitting.
WARNING
New tyres or tyres which are old, worn down or damaged cannot provide full levels of vehicle control and braking
power.
● Incorrect handling of wheels and tyres can reduce vehicle safety and cause accidents and serious injuries.
● All four wheels must be fitted with radial tyres of the same type, size(rolling circumference) and the same tread
pattern.
● New tyres will have to be run in as they will initially have reduced grip and braking effect. Drive particularly
carefully for the first 600 km (370 miles) in order to prevent accidents and serious injury.
● Check tyre pressures regularly when the tyres are cold, and always keep to the specified value. If the tyre pressure
is too low, it is possible that the tyre temperature will increase to such an extent when driving that the tread
peels off and the tyre bursts.
● Check the tyres for damage and wear at regular intervals.
● Never drive with worn tyres or tyres that are damaged(cuts, cracks or blisters). Driving with tyres in this condition
can result in blown tyres, accidents and serious injuries. Worn or damaged tyres must be replaced as soon as
possible.
● Never exceed the top speed and load permitted for the fitted tyres.
● The effectiveness of the driver assist systems and brake support systems depends on the tyre grip.
● If you notice unusual vibrations or if the vehicle pulls to one side when driving, stop the car immediately and
check the wheels and tyres for damage.
● In order to reduce the risk of losing control of the vehicle, and the risk of accident and serious injury, never loosen
the bolts on wheel rims with bolted on wheel rim rings.
● Do not use wheels or tyres if you do not know their history. Used wheels and tyres may be damaged, even if the
damage is not visible. This can cause tyre damage, tyre failure and loss of control of the vehicle.
● Even if they have not been used, old tyres can suddenly lose pressure or burst, especially at high speeds, and thus
cause accidents and serious injuries. Avoid using tyres that are more than six years old. If you have no alternative,
drive slowly and with extra care at all times.
WARNING
If the wheels are incorrectly fastened or if wheel bolts are missing, the wheels could come loose, leading to a loss of
control of the vehicle, causing accidents and serious injuries.
● Never drive if wheel bolts are missing or loose.
● Always use wheel bolts that match the wheel rims and the vehicle type.
● Always tighten the wheel bolts with the correct tightening torque. If you do not have a torque wrench, tighten
the wheel bolts with the wheel bolt wrench and have the torque checked without delay by the nearest qualified
workshop.
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