Reply To: Speedometer

[BernieParticipant]

<p style=”text-align: left;”>André,</p>
<p style=”text-align: left;”>The standard ratio gearbox is the same for French and English vehicles.</p>
Does the amount of inaccuracy vary with speed or does it always read a fixed amount low?

If the former, I would suspect the cwp has been replaced with a different ratio without changing the speedo drive.

Standard cwp is 9×31 but both 10×31 and 8×31 were available.

More recently 10×31 cwps have been manufactured as a solution to give the car “longer legs”.  If the speedo drive is not replaced, the reading is approx 10% low – I know from experience.

On the other hand, if the speedo always reads the same amount too low, the needle simply needs resetting to correct it.

B…