I'm currently using front and rear 2.125" Tioga Comp X's on my Leeson, absolutely love them! Got 'em at about 50psi, roll really nicely and grip bloody well when you're riding street, got a fair bit of give to 'em when you're on the side of a wall too even at high pressure. Nice Not good for skids though, i tried being badass like you and it just took chunks out of the rear tyre (then again, that was skidding down a MASSIVE hill) EDIT: i know you're after around a 2.3, but i much prefer the 2.125" rear over the 2.4" moto i was running previously, barely notice the difference in stability on the rear wheel/ on things, just feels generally better for some reason!