There was a time, not too long ago, when we would use up a couple of tires a night if the track was slick and I mean used up. I remember one night at THAT we burnt up three and had a couple more that were pretty ragged. I see nothing bad about USAC going to 16 inch RRs to be consistent with the other traveling series as long as they stick with it. You could have "open" rules and just go off a durometer reading, but then you get guys pissed because their preferred tires don't make the rating even though they are on the approved list. So what are you going to do? For the record, I always preferred McCrearys (AR) on dry tracks.