Sounds like the caliper may be sticking on that rear wheel. Did you take a look at the seals on that caliper? I'd start with that for sure. Good luck.
1994 C 280 117.5k, White (Good as new)
1997 Toyota Camry 149k Miles (Not so pretty anymore)
1990 190e 2.6 95k (Sold-Should not have)
1981 240d Stick ??? Miles...sold