When it comes to mud tires, these are easily the best on the market. I've have them on my XMR for about 2 years now and I love them. The traction in the mud is outstanding, and the lugs clean out with ease even in thick clay. My only complaint would be the obvious: These tires are only good in the mud, they do not get much of any traction on slippery surfaces, trails, or pavement. They also wear down fast on the trails. Otherwise these tires are well worth the money if you like playing in the mud!