Wheel Offset Calculator

ive found this to be a great tool to properly measure offsets on different widths and it has helped me enormously with my fitment. hopefully others find it as helpful as i did. enjoy!
 
[URL]http://www.1010tires.com/WheelOffsetCalculator.asp[/URL]
 
 
 
edit: oh, and i searched and couldnt find anything. maybe this could be stickied for reference?

wow, ive been looking for something like this. i wonder how accurate this is..

Its accurate to the nearest mm.

It will never measure what offset would work or not work on your car though.  It's just to tell you the difference between two different wheels...nothing more.  I say this because MOST of the time people don't measure the clearances correctly.

You can get more info and adjustments here as well:

[URL]http://www.rims-n-tires.com/rt_specs.jsp[/URL]

good stuff

This one is also a good one. Hope it helps

[url]http://www.jonathanrowny.com/page/offset-calculator[/url]

I use this one ALOT
[URL]http://www.e90post.com/forums/forumdisplay.php?f=12[/URL]

[url]www.willtheyfit.com[/url]
somewhat helpful if youre changing setups