I tow a 12,500 lb. Alpenlite 5w trailer. I have experienced many problems with the Goodyear's, no overload here, tread separation. I can't seem to find a suitable alternative! The wheels are not rated for higher than 80 lbs. pressure. I've looked at the Michelin XPS however Michelin says they are not rated for trailers. Is any one using these XPS tires? I need a 235/85/R-16 "E" rating. Can anyone help? Thanks, Ted