I would be interested on a speed fix.

Here is some reading from a TerraPhantm post on the speedometer re-calibration. This is the guy that provided information on the temp gauge buffer. He is still out there but spends most of his time now on the M3 forums. I wish this guy had owned a X5...

https://forum.e46fanatics.com/showthread.php?t=999740

When I choose my digital speed (from signal stock button) on the cluster it is bang on with what the needle shows. Are you guys saying that the hidden menu speed is the true speed and both the digital B/C and the speedo are scaled up ?

It was my understanding from reading the info posted that the DME and OBC were true speed and the gauge itself had the 5% error. :dunno:

Thank you;
Are there any Xoutpost members from Japan?
Or anyone who has a Japanese X5 who could read their IKE and post it?
It looks hit and miss without it...

That's correct. The human readable speed is scaled up. Reset your average speed when driving with cruise and see if different


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To know if you have a Japanese delivered E53 X5,
You will have ‘JPN’ in small letters in the analogue speedometer,
And, instead of L/100km or mpg for your instant fuel consumption meter,
You’ll have km/l (kilometres per litre ):

I'd like to have a Japan gauge to have accurate speed. Of course it would be in kph.

The Japanese gauge itself wouldn’t be any more accurate than any other cluster ,
it’s the programming or settings of Japanese delivered e53 that are made to show true speed,
rather than a few percent optimistic .
It may be a Japanese law that requires a true speed to be shown on vehicles sold in Japan,
rather than reading high like everywhere else.

I took note of the speedo vs BC menu #8 V: value today...

http://i65.tinypic.com/20jspdl.jpg

I should have verified these values via a GPS at the same time, as these values are with a set of tyres at pretty much minimum tread depth. I want to perform the same check once I replace the tyres so I can gauge the variation over the life of the tyres. This will affect any correction factor I might code, as no one correction factor will read TRUE speed for the entire life of a set of tyres. I'd like to set a correction factor that doesn't ever result in a speedo reading UNDER the true speed... :yikes: