Tyre Tread Depth And Age Of Tyres - Hobby OPTIMA ONTOUR EDITION 2019 Manual

28 4. Wheels and tyres
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Different tyre pressures
The following applies for inflation pressure:
- correct inflation pressure
- inflation pressure too low
- inflation pressure too high
If the pressure is too low, this may cause overheating of
the tyre, possibly resulting in severe damage to the tyre.
If the tyre pressure is too high, this will lead to increased
wear and tear of the tread and may cause damage to the
wheel suspension.
For the correct inflation pressure, please refer to the table in
the chapter on "Technical Data" or the operating instructions
for the basic vehicle.
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4.4 Tyre tread depth and age of tyres

The law states that tyres must be replaced when the tread depth
gets to 1.6 mm.
The minimum tread depth gives you only the barest amount of
safety while driving. The following recommendations must be
observed:
Safety limit in summer: 3.0 mm
Safety limit in winter: 4.0 mm
Tyres should never be exchanged from one side to the
other, i.e. from the right-hand side of the vehicle to the left-
hand side and vice versa.
Tyres age even if they are selomly used or not at all.
Tyre manufacturers' recommendations
• Irrespective of their tread depth, tyres should be changed
every 6 years.
• Avoid hard impacts against curbs, potholes or other
obstacles.