Quote Originally Posted by DarkKnt View Post
Does a lower profile tire with less air volume generate more heat?

Most heat is generated by the flexing of the tire carcass. A softer carcass, either by design or due to lower inflation, will create more heat (all else being equal). I didn't realize that TPMS gave you a temperature readout, but if you're using temperature to compare the Avons to the Bridgestones, I'd suggest the Bridgestones are a softer (more flexible) carcass.
I have the TireGard TPMS from Show Chrome. It shows both pressures and temperatures on the key fob. I've been surprised at how hot the rear tire runs. The front is always close to the ambient temp, while the rear often runs 25-30 degrees higher.