For street tires, near bald is ideal (as long as they are in otherwise good condition). Lowering them down to between 16 to 25 PSI will help a ton; really matters on the tires themselves as well as the weather/ day or night. I typically start w/ them around 25psi and work my way down. Also, extremely important to drive around the water box (w/ street tires)! Good idea to leave the john force smoke shows for the burnout contest as well. Doing a quick, medium speed burn out is all that is needed; more to clean off the tires than to get them hot. When they get too hot, they get very slick/ greasy. I usually spin them till just before they start to smoke, and try to avoid staying in the same place (move forward towards the start line).Thanks Damon. I have terrible 60' times in this car, i just likes to burn the tires through first and first part of second, no matter how i launch. But, it may do better this year, as i have pilot's on there, that aren't balled, and i'm gonna try lowering the psi a little bit.
If your clutch can take it - you want to slip the crap out of it. On near stock MKII's, I usually launch around 4K, slipping it at the edge of roasting them.
W/ run of the mill S and H rated tires on stock P-type rims, I've been able to hit a few high 1.9's, but on average can hit 2.0-2.2 w/ multiple MKII's. What works best for everyone and their car will take some trial and error, but hopefully this will be of some use...