Originally Posted by JPi4.0
39.5 bias 9 lbs
A buddy of mine had the bias Iroks in the 36" and they wouldn't hook unless they where aired down to 6psi or less, then they where unstoppable.
Keep them rotated often too, they wear out quick.
On edit: On my 40" old school MTR's I have to run 6 psi or less to get them to hook too. At 10psi they don't even bulge the side wall. I could probably go lower still but 6 seems to do good on them.