Re: beating an old horse
I have an Excell spreadsheet that uses these same calculations. It is better to go with your tire manufacture's info if it is available. Look at the 2 charts on the top and plug in your tire size, this is for the P-metric tire sizes only (ex. P225/70R15). PM me if you want it. I can't upload it as it is not compatable with this site.
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1998 GMC Sierra SLE 1/2 ton 2WD 305 Vortec
-Gibson Stainless Cat Back Swept Side
-SS Wheels
2005 Honda CRF250R
2006 Honda CRF150F
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