In Reply to: Many are (more) posted by Rob L on January 15, 2000 at 20:52:36:
: Mine, like many (most? All?) reads around 8% high.
: The OBC should be accurate. I don't have one on my Z3, but the one on my 328 would be perfectly accurate (near as I could measure) when reset in the speed mode. The OBC and odometer use the same measurement from what I'm told.
I have the OBC - yes it is about 8% different - I generally use it to determine my true speed.
: Rob L