I guess I should have explained in this case RPM means revolution per mile. I owned trucks for several years and have seen it happen. The smaller tire is not dragging but trying to spin.

Last edited by Mearl; 12/19/2010 10:45 PM.
'65 C-10, 65 L-60, 65 C-80, 72 C-60 & and a bunch of old Chevy cars.
Never time to do it right, always time to do it over.