I know this is a pretty lame question.. but I just want to make sure before I choose a tire. Of course.. there isn't a wide range of tires for the 08 yz 450f.. well 120/80-19 tires of course.. I was just wondering if a 120/90-19 would fit on these bikes w/o a problem. From my research... it seems there is a much wider selection of that size rather than the stock size.. I read a paragraph upon width and aspect ratio and such.. but i'm still not 100% sure it will fit. I would highly appreciate any input. also, i know this topic has been discussed somewhere.. eventhough I searched and could'nt really find anything but for the guys who are riding woods with mostly the intermediate stuff with a decent ammount of mud and rocks.. what tires are you guys running on your bikes? also, i'm located in eastern kentcky.. if that is a better explanation of my terrain.. I appoligize for the long post.. and Thanks again guys!