Having checked my speedo against a portable sat nav reading, I am horrified to see it is way out.
At true 30mph it is showing 39mph and gets progressively worse.
Is this common with Morgans, mine is a 1995 plus 4, and any suggestions as to the possibility of getting it recalibrated or is it a replacement job.
At least you are very unlikely to get caught speeding, if you go by the speedo reading!
But you might be pulled for causing an obstruction.
I suspect someone has fitted tyres with a different profile, so effectively changing the wheel size and altering the speedo drive gearing.
You don't mention the model and the wheel/tyre size fitted.
