I have a 86 250r and trying to get some new razr cross tires for the front and i was wondering if 20's or 19's are better, i race in MI so we have hard pack and sandy tracks, dont know if it matters, I dont know what the difference is. i have 18 razr mx's in the rear. I know on the pros on the 450's they usually ran 20's but now they have 19's. I dont have a steering damper, but its on the list. any help would be appreicated

 

I race with 20's and i like them it dont matter what others run, what ever you feel comfortable with and feel like you get the best hook up, try bikes that have each one, see whats the best type of grip for you

 

I race with 20's and i like them it dont matter what others run, what ever you feel comfortable with and feel like you get the best hook up, try bikes that have each one, see whats the best type of grip for you

 

Depends on what your doing.
18-20" for MX and 22's for XC.
FYI: my daughter says the razor cross tires are great.