Go buy you 5 michlen XP Ribs and be happy. They are not cheap but you won't have any problems out of them. If you just pick the Towmax tire up without the rim. Then pick the XP Rib up. You will know the difference.My Towmax tires lasted 7000 miles. I am now on my 2nd set of XP Ribs. I replace my tires every 5 years by the date on the side of the tire. Tires are a lot cheaper then having a blow out and not only buying tires but fixing the side and wheel well of the RV. Plus the time the RV is in the shop and you can't use it.
Always check the date on the side of the new tire before you buy it. You don't want a tire that has been sitting on the shelf for 2 years. Then in 3 years the tire will be 5 years old.