i am looking to buy new tires for my 98 m3..I am wondering what brand i should go with..the michelin pilots are very expensive like 280 a tire for 245 40 17...in the backs..i am wondering if i can go to 255 40 17 without scrubbing the tires...Any great inputs on different kinds of tires would be greatly be aperciated... how about khumos,yokhomas, and i have heard about S0's