Well im in search of a certain rim. I have found it but it doesnt have the particular backspacing I wanted, which is 3.75". It only comes with 4.0" bs. What I want to know is, whats the difference??? Where will it put the tire as oppossed to the 3.75". Right now Im rubbing the rear of my drivers side tire on the frame and a little bit of both the tires on the front swaybar. Is it really that big of a difference to not get the rims?