I'm close to purchasing a set of Champion 20's 20x8.5 and 20x11 for my 09 C4S and researching my tire possibilities. I hear the Michelin PS2's are a good tire. Most of what I read say that the PZero Rosso's are a nice smooth and quiet riding tire. I'm leaning toward the PZero's because I'm trying to balance the rough ride of the 20's and I'd throw the oem 19's back on if I wanted to track. Does anyone currently have the PZero's and can you tell if it really sacrificies performance for ride quality? Any other wheels to consider?

Anyone have any size recommendations?

Where should I get the valve stem, tpms etc or what else do I need? I've never bought wheels privately and so the tire shops usually mounted and balanced the wheels with all necessary parts without me thinking about them.

thanks in advance.

 

Michelin PS2's FTW.

 

I've had both (in 18") and I'd have to vote for the PS2 as well.