I had ST115's on my 94 530 and took a couple trips with them. Very nice tire, probably the best touring tire you could buy. Great in rain with a couple of huge grooves down the center. Seemed to be wearing very, very well up until I sold the car. I now have an 89 535im and I bought Falken Beta for this car. Also a great looking tire and so far no complaints. I would recommend either of these. I'm running 17" wheels and the factor that made me get the Betas was that although I run 235/45/17's in the front, the rears are nearly new 255/40/17 Goodyears that I wanted to wear out and replace later with 265/40/17's. The ST115 does not come in that size so I decided to try the Betas. They are both great tires, and I would always recommend Falken over almost anything. Hard to beat when you factor in cost.
Mike Holbrook.
Spring Valley, CA