What I mean by using more of the tire is that, when a bike is rolling straight up and down, only the center of the tire is touching the ground. Once you start going faster and leaning the bike over more you'll start to use more and more of the tire's edges. "Chicken strips" are what's known as the amount of unused tire closest to the tire's edge. The smaller that amount, the more lean angle you're doing. Obviously, that's a finite amount...so don't go over!