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Old 02-19-2019, 09:09 PM   #6
Ruth
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Join Date: May 2016
Location: Glide, Oregon
Posts: 1,339
Default Re: Speedometer correction with 16" Ford rims

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Quote:
Originally Posted by BRENT in 10-uh-C View Post
Al, if you have a Peterbilt or Kenworth dealer nearby, you can check with them to see if they still have any speedo correction boxes on their shelf. These little boxes have gear sets inside that can change the output to input ratio by percentages. In the interim, download the speedometer as for your smartphone.
Google 'Speedo Ratio Adapter'. Or check with Glenn at Flat-o products. http://www.flat-o.com/accessories/speedcable.htm
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