Would love to go to a radial but, I take it you are tubeless, which I like and no worry about re-installing the rim screws? If I normally run a big tire like 33-15-15 and run 8lbs were would I start on a radial?
Really want to do a radial but don't have time for a few months of trial & error as this car really would be a back up. When I changed from 29x10.5x15's on my road runner to 30x9x15 radials (hoosiers) I did just that no tubes , no rim screws, 11lbs of air to 17-18 lbs of air and picked up 3/10's in the process. Would love to hear those that changed to radials there experiences.

Thanks, Keith