Good stuff Geo. I was getting ready to post about my "odd" wear pattern on my tandem axle trailer. It looks like it's time to buy some new tires.. I went down to check on my boat a few weeks ago. I have 4 ST 175/80D13's on my trailer. I noticed that both rear tires are feathered pretty bad and have chunks of rubber missing. The weird thing is that the front two don't have any of this wear pattern on them at all. My boat sees a lot of short trips. I store it down in Lucas and pull it to the Narrows.... LoL.. probably 3 or 4 miles round trip. The tires are 5 years old and I just wondered why the rears wear more than the fonts? I chawked it up to making those turns on the Narrows ramp?? Dunno.. Looks like I'll be investing in some new tires here pretty soon.