On my Alpha trainer, the right tire is nearly bald from running one wheel on the ground instead of landing. Ithought I was the only luney tunes doing this. The reason the right tire is the one bald is because the prevailing wind comes from the one end of the runway, and if you screw up the "hold" on the ailerons and rudder, it will run right at you, if you are not on the outside tire, not a safe thing...