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.
Most of tirewarmers control temperature by thermostat. The power turn off when tire temperature reached the set temperature. However, since the tires are heated by heat conduction from the tirewarmer, it takes time for the actual tire temperature to rise. In other words, wire temperature continue to rise more and more until the actual tire temperature reched at set temperature
You find the best suspension settings while riding 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.
 
     

This is the tire heated and broken by wire heater . Logically saying, wire heater heat only the place where directly contact to the tire, and need to wait for heat transfering to entire the tire. You may think it has thermostat inside, and will control the temperature. If it is correct, It does not burn tire as in the picture. Maybe you think this tire warmer is broken. No,,, It is not broken. Thermostat measure actual tire temperature. Heating wire heats higher and higher until tire temperature rise up to 194℉. Actual wire temperature would be more than 248℉．　As a result, tires would be broken before race by using tirewarmers which was supposed to make tires to be good for race.
 
   The tirewarmer is burnt and the heating wire is exposed. If the heating wire is properly temperature controlled by a thermostat, this will not happen.
The thermostat does not sense the temperature of the heeating wire, but the temperature of the tire, so it is proof that the temperature of the hot wire has risen excessively and burned the fabric
 
 
   
 
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  There are cases where heat is generated from the rim, but since the heating area is small, the temperature of the wire must be raised to a temperature as much as breaking the tire, so it is necessary to heat it from the rim..
On the other hand, GET HOT heats the entire surface, so the heating area and heating speed are different. It is possible to increase the internal pressure without applying heat from the rim.