I just had 4 brand new Maxxis ST235/80R16 trailer tires installed on the RV today. I took the advise of Roger Marble from RV Tire Safety and purchased them from a national chain. I got them from Discount Tire. This way if I have anymore tire problems I am counting on them to help me out. I am now hoping that the Maxxis tires I decided to purchase hold up to all the hype they are receiving on the RV forums.