Awesome tool for figuring out wheel backspace stuff

UNBROKEN · Sep 17, 2011

Best one I've run across yet.....

http://www.rimsntires.com/specs.jsp

Someone should stick this....

17BLKplat · Sep 21, 2011

Was messing with that a week ago, good tool for sure

Arisley · Sep 21, 2011

You are correct sir.

steele86 · Sep 23, 2011

what offset should i use on my 03 f250 with 4inch lift and 35x12.5x17? no tire shop will tell me unless i buy a set of wheels

GreasyFingers · Sep 24, 2011

That is what this calculator is for

oke:. Stock 99-04 wheels have 4.5” backspacing and are 7” wide. So that would be 12 or 13mm of backspacing. Now you need to figure out how wide of a wheel you want and how far you want it to stick out past the stock wheel. Then use the calculator and do the math.

I don’t recall what the backspacing is for 05-07 wheels, and know anything of 08+. That might be a useful bit of info for those using this.

UNBROKEN · Sep 25, 2011

If someone has the list of stock wheel size and backspace info for different years I'm sure one of the staff would edit that into the first post for easy access.