HELP Rim measurement explanation please - Ford Powerstroke Diesel Forum
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post #1 of 1 Old 07-02-2008, 10:14 AM Thread Starter
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HELP Rim measurement explanation please

I currently have 20x9 6.25 back space.. with positve 30 mm offset
my 12.5 inch wide superswamper radials.. rub when i turn the wheel.

i want to run a 38. x 15.5 ( toyo which they say is actually 16.5 inch wide)
and i need help on what rim to get so it doesnt rub

if someone could explain how offset and back spacing works i woudl appreciate.

i know neg offset pushes the rim out thats all i know..
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