Yeah Chris, al lthe same as others said, but here's my experience.

I  had an extrememly hot front passenger wheel and the smell of burning
brakes normally saved for long downhill grades and coming from 18 wheelers.

It was about 5 years ago so I don't remember all the details. But I  took
off
the wheel and opened the rotor and the outer bearing had  noticably failed. I

think it's a roller bearing and I don't remember  the extent of the failure
exactly. But I do remember whatever it was  it was easily visible looking at
the bearing. I think the part that  holds the roller bearing was warped and
out
of shape--but agian it's  been a while.

I replaced all the front bearings since they were all some  cheap crap RMMW
had sent me. That solved the problem--it seems. I  never changed out or
adjusted
any of the brake parts in this operation (not  that the caliper is
adjustable).

Now, a few years later, let's  say two I started to have trouble with that
passenger side caliper  with the braked pulling to the right. I replaced bot
calipers at that  point as they were going on about 20years old=but again
this
waw a  different operation two years after the hot wheel.

So I'm not completely  convinced about what happened. I suppose the bearing
could have failed  when I initially felt the wheel was hot. My theory would
be
the  bearing failed the rotor got hot, expanded, and then got hotter as it
rubbed  on the brake pads. This because I'm pretty sure the smell was  hot
brake
pad  smell. although I suppose that smell we associate with  hot brakes could

just be a host of hot wheel stuff: rotor, brake pad,  rubber of tire etc in
kind
of an olfactory cocktail. (?)

In  conclusion, that original hot wheel seemed to be the bearing. Once
everything cooled down I checked the wheel and it spun freely with no  brake
drag. I
can't recall if there was bearing noise in this test.  But something got  me
looking at the bearing which as I said had  noticably failed.

I suppose there's a chance the caliper had a  "one-time" stuck drag on  the
rotor causing the heat, melting the  grease, failing the bearing. Or it was a

strange coincidence and the  bus somehow puposely dragged the brakes so i
would
find the bearing  busted before I sert out on the cross country trip I was
prepping for.

But like I said, at that time, I replaced the bearings and never had  that
hot wheel trouble since. Even when the front caliper caused the  bus to pull
to
the right a few years later the wheel never got hot  like that.

I live in SoCal so I just got up because life is slow like a  high-top loaf
and I'm rambling. But you get the idea. I'm gonna get  coffee.

Best,
Jeff
83.5  Westy
LA,CA