Ive been seeing many people, myself included, ask questions about what adapter size they will need to run 4th gen wheels etc. on their car. Since the backspacing on a wheel is just the distance from the center, you should be able to just go to:

www.convert-me.com

click on distance, type in the backspacing of your wheels in the millimeter section, click convert, then scroll down to the non-metric list accross from the inch.
Remeber that number, and buy the spacer that is larger and the closest to that size.
This is an easy way if you dont like to do conversions and dont know the metric to standard conversion numbers.
Somebody please correct me if any of this is wrong.

 

A less annoying site is http://www.onlineconversion.com

Or you can just go to google and enter something like "24.3785 inches in millimeters"

http://www.google.ca/search?hl=en&c2...in+millimeters

 

You can just use a calculator too - divide inches by 25.4 for mm, or multiply mm by 25.4 for inches.

 

He did say "if you don't know the conversions".

 

Flip that.

multiply inches by 25.4 for mm, and divide mm by 25.4 for inches

 

Doh! It's easier doing it than typing how He he he.

For alternative methods, you can (on your Texas Instruments TI-85 Graphing Calculator) enter the value in inches, hit the CONV key, pick inches>mm and hit enter.



Andris