I need a new front tire for my cr250 and I want the best possible front tire for dirt with a hard base with a thin layer of loose dirt on top (the tracks I ride tend to have these conditions) what do you guys recommend? I have been running the Dunlop 490 or 739 an I need a better front tire. IM confused do I get hard terrain because of the hard base? or do I get intermediate because of the loose dirt on top?