gsxr,

The rotors and calipers get hot because they rub together when the wheel bearings go bad.

I had mine so hot when the wheel bearing went bad, it melted the plastic fake bundt cake wheel cover.

Marcb,

Check the temp of your calipers/rotors. If one is hotter than the other, that is the one with the bad wheel bearing. Note, the bearing lasted about 1500 miles after I first heard the squealing and th noise went away by that time. Also check if there is any chucking in the wheel. This will show a bad wheel bearing too.

P E H