What difference should I expect in the handling of my Jamis with a more minimal tire in the front with a wider (I think), certainly more aggressive tire in the back? The Mountain King is 2.2 with certainly more rubber and knobbies, the Geax Mexcal is, I think, 2.1. I was told there would be a difference, it would be nice to have an idea what to expect so I can judge whether I need to take it to an easy trail first.