Hello Spyder Lovers

I recently bought a car tire to put on my 2012 Can Am Spyder RT, I called the dealer and they refused to put on the tire, stating that it miss up the ECM and the throttle body. That the speed odometer will be off by 10 to 15%. Does anyone run a Kuhmo car tire size 225/50/R15 on there spyders do you experience any issues? Called discount tire they will mount and balance the tire for $25.00. Dealer want $170 tire then another $133 to mount the tire almost $350.00 for one tire change. Has anyone changed there own tire, it does not look that difficult. Please let me know ASAP, need to get it changed this week. Thanks for the help.