I'm just about ready for new tires. I live in California and currently have the original 21" tires on the car - Continental Extreme Contact, both the front and rear are the same size P245/35/R21 96Y (regular model S 85 no P+ or D). I'm told the options I have are: Continental Extreme Contact $375.00 each (ones I have now) Continental ContiSport Contact 5 with ContiSilent - $375.00 each Michelin Pilot Sport - $440.00 Labor is $50.00 per tire. I've had the Pilot Sports before on my M3 but I'm OK with sticking with Continental (no pun intended ). Anyone have thoughts on Extreme vs. ContiSilent? Or another option? Seems the ContiSilent are a newer tire and I've read from other posts they are indeed quieter...maybe that's better? I suppose I could check the tirerack site but unless I'll save a lot $ it's not worth the hassle for me to buy outside of Telsa. I live in California so only care about summer tires (21"). Thanks for your help.