I'm running these on my wagon around 4000-4100lbs. Runs a best of 7.02 in the 1/8. I found very consistent 60' times once I got used to what they liked for a burn out. For my very short, little smoke worked best. My 60's are usually 1.53 with these.

Oh my wagon uses 8" rims and 20 psi wks best.