I had the same problem with 15" Carlisles, solved it by going to 16" wheels and Michelin SPX Rib all steel E Rated tires. End of problem. You may have to special order the 16" wheels to get the right stud pattern and spacing but they are out there. My change over was two years ago, some 15,000 miles back. Have now gone to E Rated Michelins on the truck as well. Good Luck.
Bob and Lois, Snowbirds!
2006 32' Sunny Brook