8psi cold will go up to ~11 or so once they heat up. 10-12psi hot seems to work pretty well, I haven't personally seen any benefits from going lower. This is on a ~500whp 2900lb car.
just got a set of the above mentioned tires, going on a mk2 that weighs in around 2000 pounds with me in it
just looking to see what pressure to run, there sitting around 8 psi now and are not wrinkled at all.
thanks for the heads up.
Do you mean M&H or MT?
M&H doesn't make a 24.5x9 tire, they make a 24.5x9.5x13, and a 25x8.7x13, and for 15" rims a 24.5x8.5x15.
Which do you have?
A tire under a 2000# car is going to want much less pressure than on a 2900# car.
I'd start off at 7 psi until you get used to driving the car. After you get used to driving it at speed, (and launching without breaking axles, etc), you will probably have the most traction at closer to 6 psi. I have ran those tires down to 5.5 psi on my own car, similar weight to yours.
I have ran the 25 inch m&h. Kinda depends on track prep. On a properly prepped track I have gone as low as 5psi with 1.7 60 ftsss but turning is a beeeyotch beyond belief. On ****ty prepped tracks I just say **** it and run 8-9 psi since traction suxx no matter the pressure.
ya i know the whole turning thing trying to move it around my shop, no power steering, a spooled diff and about 18 inches of rubber on the ground does not work to well,
hoping the track is well prepped friday when i run, and hoping no crazy turns to get on or off the strip.