TeeSter, I have to agree with you.

The tank tread analogy works well in a theoretical/perfect world, but it's nowhere near accurate when other variables (such as the rubber compound expanding, compressing, and slipping against the road surface - among others) are introduced in real world conditions.

Anyone that's every driven a 4WD truck with a locking front axle knows only too well how even a minor side-to-side variation in air pressure will induce a major pull to the side with lower pressure.