Question on Michelin LTX tires

I have a set of E rated tires on my 2010 Chevrolet 2500HD. They currently have 35,000 miles on them. I will be lucky to get 40,000 miles out of them. Very expensive tire with 70,000 mile warranty. If you actually read the reviews and talk to tire tire people the sidewalls and rubber are very soft. Mine came with 15/32 tread when new, rotated regularly, at 30,000 miles they were down to 5/32. I run 80 psi in the rear and 65 psi in the front when towing; and around 50 psi front and back when not towing. Michelin's are great on my cars, but I am very disappointed in this set on my truck. Next time my top three choices will be Toyo, Yokohama and Cooper.