Hi, I am new to the board and finally got my m109r a few weeks ago. I have found allot of very great info on this site. So Thankyou to all of the posters. Anyway I was hoping some one could help me out. What is the largest size tire i can safely mount on my rear stock rim. My local dealer says its the 240. But to me it looks like there is room to go bigger. Thankyou for your help.