I am about to purchase new tires for my 06Rincon 680 and I cannot decide between outlaws or vampires. The mods on my bike are an HMF Utility Series pipe and a dynojet power commander. Also 2 inch lift. Which tires would be best. Also what size?

 

with the engine mods, you should be safe running 26s and still staying close to the original performance you got with stock tires (25s, right?) and no mods. If you go any taller (or if the lugs are really tall on the 26s you choose) you will lose some low end grunt, which will effect how your bike pulls in the mud, or up hills.

27's should still be fine, but larger than that will really effect your low end performance.

Having said this, I'm sure someone will pipe up and say they run 30's with no problem