I was really hoping that was the direction to go--I ordered 21s 2 days ago. I didn't want to go 22" because most people said that was actually closer to 23".
We'll see what happens. A shorter tire might make it more nose-heavy, which in a car would make it push in the corners. My logic was way flawed a couple days ago, in that I was thinking more weight on the front axle would make it grip better, and eliminate the push. It wasn't until this morning that I thought about my truck and its tendency to understeer, and I started to remember that's why those Formula 1 guys like their mid-engined cars...
Ouch, my brain. Someone just tell me what the answer is, I suck at figuring it out on my own.