Thread: temporarily moving car, need wheels/tires

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Maybe this link will help a bit. They also have extra tech articles on this page, just look for the scroll down menus. Wheel Measurements

Also, when I measured for the rims on my truck, I started with measuring how far from the inside of the fender to the inside of the bed. I then measured from the brake drum mounting face to the inside of the bed. This is assuming that the frame rail is not sticking out past the bed, (confusing?). Basically, measure between the areas in which the tire will travel, fender to frame, or fender to bed. This gave me some numbers to work with and then add/subtract (whatever needed) as to different size rim widths and offsets.

I wanted wider tires, so I cut my bed and tubbed it a bit. Just remember to take into consideration the tire width. The link I gave you should have total sidewall widths for different tire sizes that you can pick and choose from. Don't forget to give yourself extra room for suspension travel, you don't want tire rub, that could lead to bigger problems. It's not hard to do this, it will just take time.

I know you can do it, I've seen the headers you built

I'm not sure what to tell you about your rear axle. If I remember right, you have a Ford 9-inch, well, that would have to be 5 on 4.5. For the sake of sounding like your mom, my suggestion would be to go measure it again. Just try it differently, maybe with a ruler instead of a tape measure or both.