i decided to widen out my p5 due to some rough terrain i ride. i put a set of solid axle rancher rims on mine all the way around with a 2in front spacer and can run 27-10-12 front and 27-12-12 rear with no rubbing or any problems. it widened out about 2.5 or 3 inches and makes a huge difference on stability. although you get exceptionally muddy with the wider stance. just thought id share how i did mine! thanks! 