[Shotimes] formula for rolling diameter

[Jon Heese]

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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