On the 900 Trail many, including myself go with 27x9x12 all the way around on stock wheels. No problems and this allows you to 4 corner rotate the tires for better life.Did you keep the same width from your original tires? I would love to go up to 27" but the fronts are 25 X 8 and the rears are 25 X 10 and I don't think there would be clearance on the fronts for a wider tire??? Other than buying larger wheels did you make any other modifications and what was the cost of the new tires and wheels? TIA.