Originally posted by Windsorguy99
You might want to check with dr_hufhurr(sp?) on here...he did one up a while back..and I don't know if he was marketing it or if it was just used as a personal tool..
I had done a basic Pocket Excel spreadsheet to calculate rollout given pinon spur and tire size, as weill as calculate required pinion gven spur, tire and desired rollout...
Dr_h's also included allowances for internal driv ratios for touring cars as well
I race with dr_hfuhuhurr. Here is a link to his website. The rollout calculator is still there.
2brainsdesigns