...but the inside is all worn or cupped.

So, don't shoot me, as I know there was a thread on this recently, but can't find it.

I have a little 20 foot enclosed trailer, double axle, torsion bar suspension, electric brake, and tow it with my GMC Sierra with weight distribution bars.

I will of course replacve all four tires, before towing to Atlanta, but is the wear a concern? The tires have been on the trailer for easily four years now, so it's not a huge issue. Inflation pressures have been appropriate as far as I know.

What are the suggestions for replacment? Currently they are: Carlisle "USA TRAIL", 215/75 D/S. Or that "D/S" might be DIS...not sure. Anyway, suggestions? Oh...the load is usually a 2500 pound car and another 500 pounds of crap probably.

Thanks!