the 2010 rule book says -
The wheelbase on both side of the car must be standard ± 25.4mm or 1” (This means
rather ½’’ or 12.7mm on both wheels or one wheel st andard wheel base and the other
one to a maximum of 1’’ ± forward or backwards).
i think this is the same as it has allways been, you are allowed to pull the N/S/F wheel foward up to 1 inch from standard and the O/S/F wheel back 1 inch from standard wheelbase, giving you a difference of 2 inches max from side to side.
or if you want to make things interesting you can have the O/S/F wheel foward by 1 inch and the N/S/F wheel back by 1 inch from the standard wheelbase but go carefull of the fence when you go into the corner, it might bite
