[shawnsheridan]

Originally Posted by Garth2079

For completeness, it was quoted in a BMW SIB that the speedo can't be calibrated. Presumably it's a one-time thing in the factory.

It is possible to disable the ~3% correction:

KOMBI
3000
BC_V_KORREKTUR active > nicht_activ

Changing that setting affects both the speedo needle and Heads-up digital speed, so they both still read the same.

At an indicated 60kph my car is now travelling at 57kph, instead of 53/54kph. That's near enough for me. I'll test the ODO on a longer journey but my guess is it will be recording 102km for every actual 100km travelled. So be it.

The moral of the story... order your next BMW with 17" wheels, then swap them for 19" or 20". The speedo will be correct and you'll only record 95km for every 100km travelled.

Thanks go out to the usual gentleman for offering your thoughts. You know who you are!