I'm looking at a 1989 535i. Body and interior are in beautiful shape, but it's got 124,000 miles on it. There is a slight rattle from the left front when driving over even very small bumps, so I am thinking that and other things will need mechanical attention soon. Are there any problem areas for the '89s, and what can I expect to happen from 124,000 miles on. I'd like to keep it until it dies.