40 psi is a car tire we are talking 80 t0 90 psi on ford SD and Chev GMC duramax ,HEAVY hauling hard use trucks , start driving 30 to 40,000 miles a year on every rd emaginal, nothing less that load range E 10 ply more than half the time my 1 ton ford is over 5500 kgs or 11,000 lbs, ,
i find every so often tire manufactures SCREW up , i ran toyo for years till they had sidewall issues thenBFG AT s ,now Duramax , Tried 1 set of Toyo Open C ,,no thanks worn out in 1 year, now back to good year going for a 35" instead of a 33". they will go on when the snow flies. ! set of Continentals 3 sidewall failures, no thanks. I do 15 t0 22,000 miles a year on that truck
norm
