rear tire on 1990 Mercedes-Benz 300CE

i wonder why my rear tire keep wearing off in one side &so fast?

Asked by for the 1990 Mercedes-Benz 300CE
2 answers
Have a 4 wheel alignment done at a reputable tire shop. Tire wear can be read like a book. wear on one edge, wear on both other edges, center thread or cupping of the thread each have an explanation. Too much camber, something bent or "toe set" causes wear.
your girl is to big