I've put a deposit on a new Ace 570 SP and just waiting on the dealership to get it in stock from Polaris. In the mean time i've been researching and reading a lot on these forums and other websites about tire sizing and weights. From what i've read it seems as though the Ace's have no clearance issues going to a 26 inch tire, and no modifications need to be made. Someone correct me if this is wrong. The main thing I want to know about is what is the power loss vs ground clearance lost/gain ratio between 25 inch tires and 26 inch tires. Being more specifically I'm looking at going with either BigHorns or Dirt Commanders.