We had a tripple axle toy hauler for 8 years. I had a lot of problems with tires not holding up until I changed over to the GoodYear tires from Discount Tire. They are speed rated at 81 MPH and showed impressive wear resistance. These tires were 15". Our new unit has has 16" tires and G rated but it is only two axles. Just giving my experience with the GoodYears and it was great. Also from my experience with other tires we saw the tire blow out and belts eat a hole through the floor, a tire blow out and blow the fender off the trailer and hit a piece of rebar from a broken curb in a parking lot take out two of the three tires when I only had one spare.