Evening all together, I bought my Audi 90 2,3 20V quattro again today the summer tires, the problem with the whole is that the car now pulls slightly to the right. I had the problem even before I had changed to the winter tires. With the winter tires, however, the car runs perfectly straight ahead. Tyre dimensions are winter: 195/50R15 82H on the original rims with 6*15 et 37 (are registered) and in summer 205/50R15 on 7*15 rims. The track he became re-set when I pulled up the winter tires. Air pressure fits, rims are all the same, tires are all evenly run off.