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Subject:Re: odometer tires speed error
From:Larry Hamm
Date:Mon, 19 Apr 1999 11:52:07 -0600

Douglas Prescott wrote:
>
> In a message dated 4/18/99 4:00:22 PM Eastern Daylight Time,
> lindgre@ONLINE.NO writes:
>
> > Isn't it the other way round? When your speedo shows 100, youre doing 95? I
> > thought it was supposed to be so.
>
> Per is correct on this.
> There was extensive discussion about this a year or so ago.  At that time I
> reproduced a page from Bentley explaining that they were acting in compliance
> with US DOT regulations. Add to that allowable error, and your speedo isn't
> too accurate.

Doug,
The discussion was about the effect of larger tires/wheels on speed
indications, not the built-in error of those speedos.
Larry