I have had the Cooper Roadmaster tires on my DP that were new when I purchased the coach 2 years ago (used coach - new to me). I have around 6,500 miles on them now. They seem to ride and wear well. Since they were new on the coach when I purchased it, I don't have anything to compare them to. I had Michelins on my previous DP and I am every bit as happy with the Roadmasters as I was with the Michelins but because they were/are on 2 different coaches, it's difficult to compare how they ride and handle. I wouldn't hesitate to replace the current Roadmasters with another set.
Roger & Diana
'03 Alpine 36MDDS