if only this post were up when i bought tires for my p11. i had the stock potenzas on my car and was very impressed with their grip. the car was pulling consistent 2.2 60 ft times at the track. The tread life was horrible though and in the snow it was like having skis. the treadlife was rated at 160. i went out and bought toyo proxes fz4. what a mistake they are 205/55/15. the potenzas weren't as wide but handled way better then these thing. the slightest turns make the tires howl in protest and the g hasn't duplicated the 2.2 60 ft time. stay away but hey they're allseason and they're good in the snow,,,,(as if that's any compensation) but on the brighter side their treadlife is rated at 300.