Here is the bigger issue. If you blow a tire and it tears up the coach, the repair bills will likely be much higher than the price of tires. Many like the Maxxis as they seem to be reasonablly priced and wear well. My TT is two and a half years old and already had to replace all five tire valves (with metal ones) as they were rotten and one tire as it was cracking badly on the sidewall. They were the Goodyear Marathons.
2005 Dodge, Cummins 4x4 quad cab, auto, white, dually 3500. 2009 Pacific Coachworks Tango 299bhs.