Wheel/tire diameter and speedometer reading
Thread Starter
Team Owner
Joined: Mar 1999
Posts: 89,144
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From: Life's tough, wear a helmet.
Wheel/tire diameter and speedometer reading
If you increase your wheel/tire diameter, which way does that affect the speedometer?
For example, assume a 1.5% diameter increase. At a true speed of 65 mph what does my speedometer show? 66mph or 64mph?
For example, assume a 1.5% diameter increase. At a true speed of 65 mph what does my speedometer show? 66mph or 64mph?
Pro
Joined: Oct 2001
Posts: 525
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From: Newport MI
Re: Wheel/tire diameter and speedometer reading (carter200)
bigger tire = lower than real speedo reading
smaller tire= higher than real speedo reading
smaller tire= higher than real speedo reading
