I am a first time poster here, so thanks to everyone for sharing their stories and offering assistance.

I recently changed my stock 25" tires from my 570 Sportsman (no EPS) to 26" Outback’s. Since the change I can’t go over 60kms/hr without feeling out of control, shaky and unsafe. The tread in not overly aggressive. I called my dealer and they offered no help at all. I’ve seen on here that people balance their tires, could this be the problem? I had no issued with this prior to changing the tires.

Any suggestions would be helpful.

Thanks