Tire, Mounting: Notes

NOTE:

Since Model Year (MY) 2005, all vehicles have new wheels with a revised contour.

For mounting the tires, the workshop mounting device must be equipped with a tire mounting fixture intended for these new wheels.

WARNING:

Otherwise, there is a danger of damaging the wheel.

If the tire mounting device has not yet been modified, contact the device manufacturer.

Warm up cold tires to the minimum mounting temperature

NOTE:

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

WARNING:

The minimum mounting temperature for a tire should be between 15 and 30 °C (59 and 86 °F) in the center of the tire.

For injury-free mounting, the upper sidewall and the upper bead inside must be a minimum of 15 °C (59 °F).
The internal temperature is called the core temperature.
Rubber is a poor heat conductor. For this reason, a cold tire must be exposed to a temperature controlled environment until the inner rubber layers have warmed up to at least 15 °C (59 °F).
The tire surface temperature during the warm-up phase is not a measure of 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 (86 °F)) can be used to warm up a tire!
If cold tires (below 0 °C (32 °F)) are brought into a warm room (above 0 °C (32 °F)), 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 (66.2 °F) and a tire temperature of 0 °C (32 °F) or higher, the tires should be stored for at least 2 hours at a temperature of at least 19 °C (66.2 °F).
If the room temperature is a minimum of 19 °C (66.2 °F) and the tire temperature is below 0 °C (32 °F), then the tires should be stored for at least 2.5 hours at a minimum room temperature of 19 °C (66.2 °F).

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, such as a 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!