Thanks for posting your progress. You had a better time with a 17" tall wheel than a 15"? The hieght is still a 50 profile but what does it actually measure compared to the BFG's? If the overall height is taller with the kumos than you are essentially running a lower # gear ratio. How much wrinkling in the side wall do you think you are getting. Do you have bead locks and what psi do you use when dragging?

Sorry for so many questions, I am looking into a rear set of drag wheels and tires.