Thanks for the quick replies, as soon as I posted #1 i found a whole page of previous comments of the same answer. I bought a used '11 BC 3250 with 3 tow max & 1 replacement on the curb side rear axle.
the replacement was there because the original tow-max had crapped out. I found frags of tread under the slide out stuck in places. before next season I'd like to replace them with G's. so was curious about the load bosses.Thanks again