Anyone using American racing torq thrust on 8-3/4?
Why isn't the rear tire centered in the opening?
I have AFCO springs in the car, which like the MP oval track springs and the SS springs move the axle back about a 1/2" to center the wheel in the wheel tub and maximize tire clearance, unless you use special hangers. It was done for the drag race and circle track cars so they could run larger diameter tires and still clear the wheel tubs. The stock location limits tire height and causes rubbing because it isn't centered in the tubs.
The factory axle position doesn't center the wheels in the openings anyway, which is hard to judge to begin with because the wheel openings are not symmetrical. "Centered" is a matter of where you measure from on the opening, since the openings don't have the same radius, angle, or even height in the front as they do in the back.
Regardless, my wheels are centered to the wheel tub and are probably just as close, or closer, to being centered in the openings than the factory location which is forward of center.