Sounds hard, right? It’s not! All you need to do is plug in a few simple numbers! So here are the 2 formulas that you need:
Step #1: Find the width of your factory original wheel. (Here’s how to do it: http://www.originalwheels.com/blog/2010/02/figure-out-your-rim-size/)
Step #2: Divide that number by 2; this gives you the Centerline
Step #3: On the hub, measure from the hub-mounting surface to the edge of the inboard flange (the back face of the wheel)
Step #4: That measurement is used for the second equation
Now you have your offset! I told you it was easy; now you’re more cognizant of your Factory Wheel. Even if you don’t understand it (but I really hope you do), we include the Offset on our descriptions of wheels (: Let’s look at the Honda Passport Rims ; in 1994, the Original Steel Wheel for that year has an Offset of 7.5”.
It’s okay if you need help, all of us here at OriginalWheels.com are here to assist you.
Helping you understand your wheels,
Mykalanne.