Originally Posted by Heli Animal
I'd drop it to 25 psi. My father has a GTS viper.. if I don't drop to 25 psi at the track it will 2.2 60' :sucks (yes he doesn't race and lets me beat the crap outta it at the 1/4 mile!) but I can hit 1.9's with lower pressure. It really makes a huge difference!
Thats with regular tires though, not runflats. Below 28psi on RFT's its pointless as the stiffer sidewall begins to take over. 20-25psi on regular tires would be a lot more beneficial.