If you really want to know what is heating up your wheels...then you gotta shoot
many places....each time...in order to see the whole picture.
Datum before leaving of all the spots below. You might make a chart...rows and
columns...rows for each spot below and columns for each snap shot. The more
often the better
Shoot the tread center, edge rib, sidewall, sidewall bead that you can see, the
wheel rim by that bead, the wheel rim center, wheel spider at the transition to
the rim, wheel spider center, wheel spider next to the lug nuts, lug nuts, the
caliper, disc, hub. Take an ambient somewhere close...like the bumper/fender/etc
Then you will see gradients start to show up
On all of mine, the brakes bring it onto the wheel. Tire heat is nothing, as
rubber is a better insulator than metal and would be surprised if the tire
gets hour wheels hot....and if that is the case, then your tires are going to
blow up soon...
You should find that the disc is the hottest, next should be the lug nuts and/or
hub.
Then as you move away from the lug nuts/hub contact area...cooler and cooler
till you reach the tire sidewall.
It might then get hotter as you then move towards the tread, but no where as
hot as the disc/lug nuts