Lowest possible PSI when dragracing

[chevylover]

After spending some time at the track and playing around with tire pressure I have a question.

What is the minimum tire pressure you can run on street tires, to get the widest contact patch, with out worry of spinning the tire off it's bead to the rim.

I had my 275/40 17's down to 18psi tonight and they grabbed pretty good. Could I have gone lower????

 

[Defleshed]

lowest I've ever done was 14psi.... i beat the crap out of the tires hooking I'll bet though, lol

Edit: that was on ET Streets

 

[Ruckus46Gt]

i found i ran best with my tire pressure down to 25psi on my stock 245/45/18 tires