I suck with picking tires and knowing what will fit on my 06 CRF450R. I was out riding yesterday and discovered that I hate the front tire they put on the 450. Some guys at the track were saying that for the rear the Michelin Starcross MS2 was a good tire. What do you guys think about it? Also, what sizes will fit my bike? I have no clue what the numbers on the tires mean. Im ignorant when it comes to tires/sizes/ratings, etc. Help! Edit : I ride in Ohio, we have some nice dirt, but it seems most of the tracks I ride on lately have a mix of hard pack and larger chunks of dirt. If someone can tell me what the numbers on the tires match up to. I know x/x/19 means the tire size is for a 19" rim, but I dont know what the other two numbers mean.