OLD THREAD, but if you're still interested, I'm on my 4th set of tires on my 03 P5 with stock rims.
1) Stock Dunlop's 195/50/16
2) Pirelli PZero Nero M/S 205/50/16
3) Avon M500 205/50/16
4) Kuhmo SPT 195/50/16
The Pirelli's were my favorite, but most expensive. An all season tire with a...