My 28x10.5s hold air great. I've got 4 weeks and they may have only lost 1 pound.

I was planning to run 14x32 PBRs on my '71 Cuda but before I ordered them I spoke to one of the MT techs that bring the semi to the NHRA events and he recommended I stay with the standard bias ply stiff side wall slicks to I'm taking his advise and staying with the 3074S 14x32 stiff sidewall slicks.

But I will keep running the PBRs on my wife's '68 because they've worked so great over the past 5 or so years.