My front tire has started sliding more than I like it and I think it's because it is getting worn some. I ride mostly gravel and rock things along with a lot of grass and fields and little track type terrain. I don't want a DOT tire or don't need one as the bike isn't street legal. I have the Dunlop 756 on it now should I go with that again or is there a better tire out there? I want the best traction possible and wouldn't mind a long lasting tire. What do you guys reccomend.