Wife's e36 needs new rear axle half-shafts. $350 per axle for new OEM vs. $71 per axle, "Cardone" local Checkers Auto remanufactured brand. I'm thinking at that price, all they do is take in cores and put new boots & grease in them & maybe shoot some spray paint on them. I'm not building a track car here so if the rebuilt is adequate, that's fine with me, just need to get rid of the rumble in the drivetrain & don't want to spend a fortune on it. I just spent $675 for new tires, road force balance & a 4-wheel alignment so have to cut corners when it comes to the axles.

I have narrowed it down conclusively to the inner axle CV joints at the diff, both sides have gobs of slop & just flop around & cause all sorts of rumble & vibration at ~15-20 mph. It's not a driveshaft center bearing or guibo issue.