mpclimber

I've been running Summi HTR's for the last 3000 miles (including one track day), and they've been great. Quiet, predictable, good grip and great wear. I just bought a set of 18" Champion RG5s shod with PS2s. I'll be mounting them this weekend and I'll post up my impressions once I get enough miles under my belt.

adam_

I have PS2s on stock rims...quite a fan. Same tires on my M5.

235/40 on front and 315/30 on the rear... which are GT2 sizes, perfectly fine on the turbo as well.

Pay attention to the difference in overall diameter front to rear. You want to run

225/40 with 295/30

OR

235/40 with 315/30...

A

Superfly

PS2's on my stock spring/fall rims. MPSC's on the summer rims. Love them. Absolutely love em. If they had the right size for my other cars, those are the shoes I'd be wearing there too.

TrackDays247.com

+2 on the above 2 recs - same here. You will LOVE the PS2s on the street, feels like a track tire.
They last about 10k + / - so be aware of that data point.

MitchW

I did my first tire change late last year replacing only my rears with 295/30 PS2's. Actually have the previous model PS2's up front. I was warned against this by one member because of slightly different tred designs, but the car drives and handles great so far. It might be that this is the first set of new tires I've had with the car, and I just don't know any better!

I got a good deal on the tires at DiscountTires.com. Best price I could find.

TrackDays247.com

I even have the runflats on the rear and the non up front - (not recommended) but they feel the same to me for my use....