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Bus Discussion => Bus Topics ( click here for quick start! ) => Topic started by: roadrunnertex on February 16, 2011, 09:20:21 AM

Title: Speedometer calabration question?
Post by: roadrunnertex on February 16, 2011, 09:20:21 AM
I have a new speedometer kit for my coach it's calibrated for 11R-22.5 tire size which is 490 revolutions per mile.
On my coach I have 12R22.5 tires and they are 480 revolutions per mile.
Will the speedometer read high or low?
I can have the speedometer recalibrate to read 480 revolutions but was just wondering what the difference would be.
jlv
Title: Re: Speedometer calabration question?
Post by: Chopper Scott on February 16, 2011, 10:14:50 AM
It will show that you are going 48 mph when you will actually  be going 49.
Title: Re: Speedometer calabration question?
Post by: Dreamscape on February 16, 2011, 10:20:37 AM
Hey John,

What model did you get?

I have to set mine up and if it's a Dixson, maybe you can get me your dip switch settings....................Please. I have 10 dip switches. I have the same front tire size as you do. I just haven't had time to set them and then check it.

;)

Paul
Title: Re: Speedometer calabration question?
Post by: gus on February 16, 2011, 01:53:11 PM
Just borrow someone's GPS and check it out, they are very accurate. I use mine more than I do the speedometer which is not easy to read.
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