I need to replace both rear tires (fronts still have a season or 2 left on them). I have an '07 Brute Force 650 SRA with stock rims and tires. I was planning on putting 2 Kenda executioner tires on the rear. Will I have any problems?? DO I have to replace all four?

Thanks for the help.

 

if u change only the rear or the front u have to keep the tire hieght the same so that all four wheels are 25,26,27,28 and so on . 4wheel drives have to maintain the same gear ratio from front to rear.