Tire cleaning
If possible, do not clean tires with a steam jet. If the steam jet nozzle is brought too close, the rubber layer will be destroyed in a short time, even when using cold water. A tire cleaned in this way must be replaced for safety reasons.
Tires that have had prolonged contact with oil or grease should also be replaced. The tire is pressed in these places, but then returns to its original shape and appears undamaged from the outside. However, the tire's load-bearing capacity is greatly reduced.
Tire storage
Tires should be stored in a cool, dark and dry place. They should not come into contact with oil or grease.
Wheels should be stored lying down or hanging in a garage or basement.
Before removing the wheels, you should increase the pressure in the tires (by approximately 0.3-0.5 Bar).
For winter tires, use your own rims, since remounting tires on the same rims is not practical for cost reasons.
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Tire running-in
New tires have a very smooth surface. Therefore, new tires - this also applies to the spare tire - must be run in. During the running in, the tire surface becomes rougher due to wear. For the first 300 km with new tires, you must drive very carefully, especially on wet roads.