For a rear tire, I like the Mefo super explorer (way better than the regular explorer IMHO). They are very similar to the Hiedenau K60's which are also a good choice. The super explorers seem to wear longer for me than the K60's. Word on the street is some sizes of K60's wear longer than others. Also the K60 tread pattern varies according to the tire size. For the front, I like TKC 80 or D606: TKC lasts longer, but not as aggressive. Good luck with your search.