tire leaning in at the top

Realistically, we could use more info. Is it one wheel or both? If the car is road-worthy, does it pull to one side, make any strange noises (clunking, etc), wobble etc? Did this happen all of a sudden, or has it always been that way and you just noticed? (check tire wear if its a driver).

If it's both sides equally, I'd suspect sagging torsion bars or wiped out control arm bushings. If its one side only, check for a loose upper control arm, bad/missing bushings, or maybe a bad ball joint. The upper control arm is what controls the camber, if the car is sitting relatively level then your problem is likely there. Wheel bearings are pretty unlikely, for it to be that noticeable at the tire your wheel would have to be falling off.

If the car isn't sitting level, you could have a backed out torsion bar adjuster. Typically the wheel gains a little negative camber (tire tipped in at the top) as the front end is lowered.