You mounted this tire? That is a slick tire with water channels, it won't matter much to change I think.
Smaller tire and more rim damage\flats. Try different when you run these out, the rear will go first -then try a smaller rear slick.
Also IMO, running larger front to rear tire sizes works for incline frames. If you don't run a suspension fork -big up the front tire and lower the psi =a little shock absorption.And the rolling resistance is rear -where the weight is so having a larger front won't slow you down unless you stand over the bars and force your weight onto the tire.