I have a question about back spacing
The car is a 71 Narrow body with mostly stock suspension
I would like to go with a 18 inch wheel front and back, fronts something like a 225/35ZR18 with a 8 inch wide rim, rear 275/40ZR18 with a 9 inch wide rim
I am concerned that the fronts will have tire rub and the rears I would like a deep dish rim that pushes the tire to the wheel lip.
Can anyone suggest proper back spacing for the rims?