Tire cleaning
If possible, do not clean your tires with steam. This can seriously damage the top layer of the tire, significantly shorten the life of the tire, and require replacement.
Tires that have been in contact with oil or grease for a long time are also subject to replacement. The tires at the points of contact initially swell, but then return to their normal shape and appear undamaged. However, the ability of such tires to withstand loads is greatly reduced.
Tire storage
Tires should be stored in a cool, dark and dry place, away from oil or grease.
[The article is copied from the website mazbook.ru]
Tires should be stored lying down or hung together with the rims in a garage or basement.
Before removing the wheels, increase the pressure in them slightly (by 0.3-0.5 bar).
For winter tires, it is better to use separate rims so as not to have to change the tires every time.
Precautions: Tires that are older than 6 years should only be used as a last resort and with great caution. When replacing and installing tubeless tires, the rubber valve must also be replaced.
Tire running-in
New tires have a very smooth surface. Therefore, new tires (and a new spare tire) needs to be run in. During this running in and initial wear, the smooth surface will wear off.
When driving the first 300 km with new tires on wet roads, you need to drive very carefully.