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I have some AMC rims I'm trying to sell on craigslist and I want to describe then correctly. For the rim width i.e. 15 X 6, 15 X 7, etc. do you measure between the inside of the two lips that the tire bead seals to or just right across the whole width of the rim? Also I was wondering the same thing for measuring back spacing.

Thanks,
ski
 
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ski said:
For the rim width.....do you measure between the inside of the two lips that the tire bead seals to or just right across the whole width of the rim?  Also I was wondering the same thing for measuring back spacing. 
Inside the bead. Don't know about the BS.
 

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Yup, rim width is measured where the bead seats. Backspace is measured from the where the wheel contacts the brake drum to the outside lip of the wheel. A 15x7 rim is 7'" from bead seat to bead seat and almost 8" from outer lip to outer lip.



mike.
 
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