05-06-13, 05:23 PM
As far as I'm aware the 10%+2mph is a guide line only. If they want to do you for 71mph on the motorway they can.
And as for speedo inaccuracy, your speedo should only ever over-read (70mph on speedo, ~67mph (for example) actual).
And as for speedo inaccuracy, your speedo should only ever over-read (70mph on speedo, ~67mph (for example) actual).