What's up with these new rotors?

Bulldozer said
just for the sake of argument, ive witnessed two instances , both involving old mopars , where the bearing races welded themselves to the spindles because of misalignment of the bearings inside the opposing race , also known as cross breading parts . the races got so hot riding on the outer edges that it took a hammer and chisel to get the welded races off the spindles, and ended up needing new spindles on top of it all.

I had a buddy who's 67 mustang wheel bearing got so hot it weakened the spindle enough to make his wheel camber out 30 degrees....on the way back from Vegas...wonder if it saw grease or maybe...a mismatched bearing? (scary music) Id find a way to pound it out after measuring the OD of the old race about 6 ways to Sunday to make sure the new race will fit.