Since conventional wire heaters have a small heating area, the air pressure could not be increased without strongly heating the wire. The tire temperature must be raised more than necessary in order to raise the air pressure as in running conditions. This was common sense in using conventional wire heaters. However, this is not the good way to prepare tires for race. You find the best suspension settings while driving in practice session. The tire temperature and air pressure at that time should be the best tire conditions. GET HOT tirewarmers heat up evenly throughout, making it possible to prepare for the best tire temperature and air pressure before race as in running condition with under 212℉ not to break tires.