I have run 225/50/16's on my 2000SVT for the past 2 seasons and have never had a problem. My first set were the BFG Comp T/A R1s and they lasted the entire season. My current set are Khumo VictorRacers and I currently have 2 events on them. 16 Runs for about 1 minute each time on Air Force Concrete and the fronts are midly worn, and the rears are showing minor signs of wear. I generally run 40 PSI all the way around. Is it possible that you are overdriving the car?
http://www.neokla-scca.org Just a Thought.
