Calibrating the speedometer

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Jan 13, 2007 | 11:55 PM

in the flesh

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3rd Gear

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From: Miami, FL

Calibrating the speedometer

Getting new rims, I understand if you change your wheels the speedometer needs to be recalibrated.. Where can I do this?

Jan 14, 2007 | 04:57 AM

onasled

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From: Northeast CT

I don't think you can. Anyway, as I remember, Mini speedo's are off anyway. They read higher then actual speed, and even more as speed goes up, as much as 10mph.

Jan 14, 2007 | 07:55 AM

Hound_va

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From: Virginia

The speedometer reading is directly related to the rolling diameter of your wheel/tire choice. Plug some numbers into the calculator at the below link and you'll see how the speedometer is affected.

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