I know I'm out powered by the newer Polaris models, I'm talking the 900 Rangers & RZR's I've been riding with. The biggest problem I seem to have is hill climbs, whether it's mud or loose dirt I always seem to get to the top and spin out, just can't seem to get over the ridge. These are steep hills, thought I was going to roll backward today. I know I have heavy tires which isn't helping, they're about 35.5 pounds each. I do think that the weight distribution of where the engine sits makes a difference also. Any opinions?