A number of you had asked me to post an evaluation of the Pirelli P-Zero Corsa's after putting them on my car. Bottom line, Awesome! Background: I ran my car, a '99 Modena, at it's first track day this spring at Pocono. I found two problems. 1) The car had too much oversteer exiting medium speed corners, kind of fun but not fast. 2) The brakes faded badly after about 15 minutes of lapping. The pedal would hit the floor and I had to pump them up before reallu using them. Away from that I was extremely impressed by the car on the track. I am an active racer and generally am not impressed by street cars in track conditions. This car felt like a racecar and was pretty quick. I love the way it turns in. The changes: In an attempt to alieviate some of the oversteer I opted for a set of Pirelli P-Zero Corsa's. These are basically soft compound slicks with minimal tread. I think the Challenge guys use them for intermediate rain tires. I went 20mm wider in the rear to 295mm and kept the fronts at 235mm. I mounted them on a set of Challenge wheels. To try to improve the braking situation I switched to Ferrodo DS2500 pads (Street/track) and Castrol SRF fluid, which has the highest boiling point available. The results: I took the car to a track day at Lime Rock last Friday. Wow what a difference! I started off easy as I recalled how the rear would come out at Pocono and Lime Rock has a lot of intermediate speed turns. The car felt planted and I picked up the pace in the next session. The oversteer was almost completely gone! After the tires warmed they had a tremendous amount of grip and good feedback as they approached the limit. They wouldn't just suddenly throw you over the edge of adhesion. I used 30 pounds front and 29 pounds rear for pressures. The car now inspired the confidence to be driven at 10/10's. In the brake department, the changes also worked very well. I experienced zero fade during a full day of hard lapping. I highly recommend these changes for anyone running a Modena occasionally on the track, they really transformed the car! I got down to 1:01's which I saw would put me in the middle of the GT Grid for qualifying when Grand Am was there in 2001. Pretty good for a street car!! Conditions were good, about 50 degrees and sunny. I initially thought I would only track my car once to see what it was made of. It was so much fun I'll definately be back with it. The next thing I need to work on is that pesky check engine light. It comes on during track days and indicates a misfire although the engine runs great. I replaced the ECU's and sensors last time which cured the problem on the street but the problem is back after another track day. Does anyone have any experience with this problem?