Conti Touring came standard on my Styling 73 17 rims with 2002 330i non-sport (rims/tires for sale currently, check classifieds). They are very quiet, decent performance. I actually liked the styling of rims very much although they can be a hassle to clean. I switched to ContiSport on M68 rims and... it is like a night and day experience. It is as if I bought a different car. They are much tighther in turns and quick highway lane changes, dsc hardly ever kicks in. The ride is MUCH harsher. IT feels as if the entire suspension has been changed. You feel every road bump (especially here in California!) I hear that ContiTouring last pretty long time. They definitely offer less traction then Conti Sport. The ride is MUCH more comfortable and very quiet though. After I changed the rims/tires I discovered a lot of squeeking in my car that was not there before. I don't regret though. The performance difference is well worth it. Now, if I could only change my seats to sport ones...