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5-Series (E12,E28, E34, E39, E60)Chat relating to the BMW 5-Series of all generations. Specific models include: BMW 518, BMW 520, BMW 520i, BMW 530i, BMW 528i, BMW 530i, BMW 518i, BMW 524d, BMW 525i, BMW 525e, BMW 528e, BMW 540i, BMW 535i, BMW 520d, BMW 525td, BMW 525d, BMW 530d, BMW 525i/xi, BMW 530i/xi. (BMW 5-Series Forum)
Hi Guys,
just noticed the the reading on my speedo is incorrect. I've recently the I get three different speed reading from my speedo, on board computer and my navman satnav. Any help would be greatly appreciated.
That is actually very common. The navigation is going to be the correct one, because it gets its reading from a satellite. You can have the OBC and the speedometer corrected by a professional; however it may come to be a headache and not worth it.
Since you have a navigation, you are much better off. Just follow that. The problem is know to be an issue right out of the factory; and when different sized wheels are added it only complicated the problem. The nav will always be correct due to the nature of how it measures it.
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