I was bit by the towmaster bug to the tune of $2200. Trailer is stored indoors, tires always perfectly inflated, and only had maybe 2000 miles in the their one year life. Was traveling about 60 mph when the tread delaminated and destroyed the under side of the slideout. Look at the 59 pages of NTSB complaints, then run as far as you possible can. Save yourself the headache. When I had them changed they paid to have them sent back to the factory for inspection. When they were dismounted you could clearly see broken belts in two of the other three tires. The company failed to take responsibility for those pos tires, but agreed to pay for half the damage if I wouldn't sue them. I didn't have the time or money to sue an international company so I signed the letter and got my half of the money back which covered my deductible. Did I mention I hate that company