First let me tell you i bought a used 96 m3 three years ago. Since then i have been through 3 sets of tires and all of them have had cupping problems. I have a stock suspension and my last set of tires were avs sports. I have had 3 alignments done and it still continues to do it. All 4 tires cup on the inside edge, and it starts to happen after only 2000 miles. What else can i do? I have taken to the dealership and they say that it is an alignment problem. But that obviously isn't the problem. I just had my service 2 done, and they didn't say the shocks were bad, so i don't know what to do.