[Shotimes] formula for rolling diameter

[Tom Smith]

Or you could use:

http://www.miata.net/garage/tirecalc.html

Great for comparing sizes quickly


Tom 91+

On Tue, 28 Feb 2006, Jon Heese wrote:

> Given: A/BrC
>
> D = C + 2((A/25.4)*(B/100))
>
> eg. Given: 215/55R16
>
> D = 16 + 2((215/25.4)*(55/100))
>    = 16 + 2(8.46 * 0.55)
>    = 16 + 2(4.655)
>    = 16 + 9.311
> D = 25.311 inches
>
> Regards,
> Jon Heese
>
> van Oss wrote:
> > Could someone please remind me, what's the algebra for calculating the
> > rolling diameter of a tire given the usual stats (width, ratio, and rim
> > diam.)?
> >
> > VO
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