B F Goodrich ST230's on our 2004 Country Coach at the suggestion of Pat at Pro Tire in Denton TX. We have over 50,000 miles on them and we are very happy with the ride and very little wear patterns. Much better ride than the Toyos that came on the RV. He came to our RV site, changed all 6 tires, balanced and did laser alignment, set the ride height and toe-in. Not sure if this is still Pat's number (940) 367-0830. If not, and you want to call him, send me a private message and I'll try to find his card.