We enforce the rule of no wet tires and for the most part everyone is very good about wiping there tires. What we're seeing is what happens at big races with Jack the Gripper. The Lilac\Magenta family of tires really lay down the compound and foam in to the carpet. We've been running a far amount of WGT lately and now 13.5 12th scale. On top of that, this last week the track was used 4 days of 5 with the holidays. So the grove by Sunday was something we have not seem since our last 3 day race.

It's seems the best advice I've heard so far is have several sets of tires available and rotate each set in during a race day. Basically run once, clean with motor spray, change to a dry set from last race day. I guess many of the pros at big races do this. This is probably one of the reason most at our tack seem to get slower as the day goes on. The 2nd qualifier seems to be the best.