Speedo difference with different tires

[93SHOATX]

I remember seeing a something that broke down the difference in your speedo when you used tires other that factory. Does anyone know where I ca find this. I just got 225/50/16 Dunlop Sp Sport 5000's. Thanks for the help

 

[SHO2NV]

Here ya go man. http://www.miata.net/garage/tirecalc.html

It does the math for ya.

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John
Green 94 ATX
SHO2NV