I'm just waiting to see what the wheel/tire weight for the AR's is going to be.
There wasn't one published last year since the tire was new, and now that everyone is making 13-14lb wheels with the exception of the USLC branded wheel, I wouldnt be surprised if everything without a USLC sticker, or bought from them, will be illegal. Coupled with reports that the 13lb wheels are not holding up to the dirt abuse. Thats why I have my new tires mounted on the old Bassett's right now, no rule book to refer to