Wheel and Tire Assembly Requirements

Wheel and Tire Assembly Requirements

Warm up cold tires to the minimum mounting temperature.

• This applies also to ultra high performance tires (height- / width ration smaller/same 45% and speed rating symbol larger than/same as V).


The minimum mounting temperature for a tire may not be below 15 °C or above 30 °C in the center of the tire.

• For injury-free mounting, the upper sidewall and the upper bead inside must be minimum 15 °C.

• The internal temperature is called the core temperature.

• Rubber is a poor heat conductor, and for this reason, a cold tire must exposed to a temperature controlled environment until the inner rubber layers have warmed up to at least 15 °C.

• The tire surface temperature during the warm-up phase is not a measure the inside temperature.

• So that the cold tires warm up as quickly as possible, never stack them one on top of the other; store them separated from each other so that the warm air can "circulate" around them.

• Never us a room heater or a hot air gun to warm up tires because the surface temperature will heat up very quickly to a critical temperature.

• To prevent damage, only warm water or warm air (maximum 50 °C) can be used to warm up a tire!

• If cold tires (below 0 °C) are brought into a warm room (above 0 °C), a layer of ice will start to form on the tires. This layer of ice means that humidity in the warm air is condensing on the tire.

• Once the layer of ice starts to melt, water will start to build. Wipe up the water with a cloth so that the warming process does not slow down.

Warm-Up Time

• Using the example of a room temperature of at least 19 °C and a tire temperature of 0 °C or higher, the tires should be stored for at least 2 hours at least 19 °C.

• If the room temperature is minimum 19 °C and the tire temperature is below 0 °C , then the tires should be stored for at least 2.5 hours at a minimum room temperature of 19 °C.

Recommendations:

• If possible, let the tires stand in the workshop for 1 day before mounting them.

• Store the tires as high as possible on an insulated surface, pallet or something similar.

• Position the tires so that they can be "surrounded" by the warm air.

• Wipe off the sweat.

• Never heat the tires with a room heater or a hot air gun!