Bridgestone Potenza RE-050

I have used two sets of tires. One is Dulop DZ-101 and the other is Goodyear RS-02. DZ-101 is OK quiet but rubber is little bit hard. The preformance is not so solid. If you are normal driver, it is acceptable quality and price. For RS-02, preformance is better but little bit noise.

Bridgestone Potenza RE-050 - it is top of this line. I am really no disappointed. RE-050 is excellent in balance of handling, comfort and noise. Althoughit is so expensive @$2500

My comment is: If you want to use big size tire, don't consider money too much. Actually, flat tire and big wheel are expensive. Otherwise, change change change, problem problem and finally back to big brand like me. "LOST MONEY"

UR Racing Pulley Kit (Underdrive Type)

I have installed DTM original size pulley before. The feeling is not so big. However, these set drive me very happy since I have big improvement on slow start and kick down. I think the reasons are light weight and underdrive driven pulley.