have to be adjusted. IMHO, if the rear axle is lowered and then reduced in width, the rear wheels and tires will both sit lower and be more under the wing (inside the wheelwell) which will make it look much closer to that of the 1:1. In all the pictures of the actual car I've seen either a) the front and back wheels and tires appear to be the same size, or b) the wheels and tires are tucked into the wheelwell more, so that the car's stance is flat, not tipped/leaning forward.