I just ordered a GPS speedo. Two reasons for this, the first is that the Plus4 speedo is buried under the tonneau cover, on the rare occasions I'm out alone with the passenger side covered.

The second reason is that my dashcam flips into GPS speedo mode as I approach speed gantries, and I find that to be far more accurate than the car speedo. However my dashcam doesn't always trip on the gantries, it seems to be more consistent at night, which is odd.


DaveW
'05 Red Roadster S1
'16 Yellow (Not the only) Narrow AR GDI Plus 4