doing 154 for 160... calibration | Forums BMWauto.net || BMW AUTO - cars, motorcycles, tuning, ads, photos  
 

  Home    |    BMW website    |    BMW History    |    Contact us    |
  FORUMSbmwauto.net BMW Disscussion forums || www.bmwauto.net/forums
   Menu
    General BMW
    BMW 3-Series
   BMW 5-Series
    BMW Z-Series
    BMW European Delivery
    BMW FORUMS - home page

  What's Going On?
There are 37 guests on-line

  BMW Forums » BMW discussion forums » BMW 5-Series
  doing 154 for 160... calibration

 doing 154 for 160... calibration



Hi fest..
I was playing around with my OBC while heading for work when I noticed the following:

1- Speedo says 130; OBC limit says 124
2- Speedo says 150; OBC limit says 142
3- Speedo says 160; OBC limit says 154

So I set the limit to 160 on OBC and watched it when the ding goes, it was at 170 almost...

I run OEM 235/45 ZR 17 all with stock Dunlop sport 2000E... what's wrong with my gauges.. I can't remember that I had a simialr problem when I bought the car.. The car reads 37500 km...

No wonder that people falsh at me when speed limit is 50... am doing 40 my old chevy used to do 10 km more on stock all-in-all..

Is BMW known for fake gauge readings or there is some sort of calibration? any insight...
   Reply » doing 154 for 160... calibration

BMW purposely sets their speedos to read higher than actual. For the E39, I recall that they can be out as much as like 2% + 5 mph or something like that or maybe it was 5 mph +/- 2%. I forget.

Yours appears to read about 7-8 kph higher than actual so use that as a guage for you. BMW will consider your speedo reading to be within tolerance most likely and they will not fix it. At least, that is the case in the US.

   Reply » doing 154 for 160... calibration

Quote:
BMW purposely sets their speedos to read higher than actual. For the E39, I recall that they can be out as much as like 2% + 5 mph or something like that or maybe it was 5 mph +/- 2%. I forget.

Yours appears to read about 7-8 kph higher than actual so use that as a guage for you. BMW will consider your speedo reading to be within tolerance most likely and they will not fix it. At least, that is the case in the US.
Thanks Agent... Next time I am gonna chagne the width and profile of my tires to get this rectified. Of course for the sake of getting wider contacts

   Reply » doing 154 for 160... calibration

That will take away torque and raise your CG. Also beware the odometer is correct still, just your speedo is off. So larger tires will be making your OD innacurate.


Page 1 of 1

1



  BMW Forums » BMW discussion forums » BMW 5-Series

 

Forums BMWauto.net (c) 2001-2007