Measuring for the correct wheel size/backspacing/offset?
 

In my quest for new wheels for my Corvair, I quickly realized that nobody makes a bolt-in part for that car. That means that I need to check fitment, backspacing, etc. on my own BEFORE purchasing a set of wheels to make sure they'll fit. Is there a good guide out there somewhere that outlines the process for calculating the proper wheel fitment? I'd love to pick up a set of black steely Cragars, I just need to make sure I get the right measurements before buying them.

There are various fitment tools that you can buy or make that can make the job easier, but nothing beats using real parts IMHO. The Percy Wheelrite (http://www.percyshp.com/WheelRite.html) does an okay job for personal use, however isn't quite as industrial as I like my tools to be.

Tobin
KORE3

I made up a tire and wheel simulator. Its made from 3/16" plate and is pretty stout and easy to make. I can simulate a tire and wheel from 14"x7" up to 20"x 13" and everything in between. And some crazy offsets also. JR

http://img.photobucket.com/albums/v3...a/17incher.jpg

http://img.photobucket.com/albums/v3.../215-45-17.jpg

http://img.photobucket.com/albums/v3...point5wide.jpg

http://img.photobucket.com/albums/v3...ova/center.jpg

Here's another product to think about, albeit a pricey one...

http://autowaretech.com/mountmate/