This not only warms the tyre surface, but also preheats the tyre completely including the wheel rim.
To achieve the optimal tyre operating temperature of 90 °C, we recommend
- about 30 minutes at an ambient temperature above 15 °C and
- about 40 minutes at an ambient temperature below 15 °C.
What you should consider when using the M tyre heaters can be read in this article.
Please also follow the quick reference (download here) with the most important information to consider to avoid potential hazards.