Speedometer off from factory?

Capnhook · 02-23-2014, 11:17 AM

My wife's 2012 35d with sport package & 20" wheels, she noticed the other day on approach to two separate roadside radar speed indicators, that her speedometer & HUD is off by 3 mph. She informed me of this and I was thinking, no way it could be off by that much! Checked it with my gps, and it's also showing 3 mph off. The truck constantly is showing 3 mph UNDER speed, which should also throw off the odometer, racking up more miles than what is actually being driven on the truck.

Anyone else checked their speedometers with gps? Nothing has been changed on this truck, it's all stock.

RllyDrvrIX · 02-23-2014, 01:16 PM

2011 X5 is about 2mph above actual per Garmin GPS and iPhone 5 Map app.

TazOjla · 02-23-2014, 01:53 PM

Never checked it but I'll have a go with my iPhone on the way to work

retusn · 02-23-2014, 06:01 PM

Mine is 4 MPH off. The M3 was also off by 4 MPH.

texvette · 02-23-2014, 06:21 PM

I asked the dealer when got my 335i. Was told BMW's are on the conservative side
with speedometer readings

Draper · 02-23-2014, 07:17 PM

It's an overestimation which for whatever reason is there by design, but it can be disabled through coding.

BigBalls · 02-23-2014, 08:11 PM

who said that gps speed is the real/actual speed ?

Capnhook · 02-23-2014, 11:25 PM

Quote:

Originally Posted by BigBalls

who said that gps speed is the real/actual speed ?

Well, what I'm gathering here is it's not uncommon. And if 3 other devices are registering my speed to be 3 mph under what's stated on my vehicle's dash and HUD, I might be inclined to believe them.

Plus! This would cause ~5% increase in odometer mileage being added to the truck that isn't being driven. If the truck has 50,000 miles driving, my wife's X5 will show 52,500 miles!

SchaumerMol · 02-24-2014, 06:10 AM

5km/h aka 3mph off by standard + tire/wheel diameter, and there you have your problem. I am sure mileage of the car is calculated differently by an ISO Standard or something.

Toneaero · 02-25-2014, 10:57 PM

Quote:

Originally Posted by jzbm3

It's an overestimation which for whatever reason is there by design, but it can be disabled through coding.

+1

I had mine coded to remove the "overestimation". Unfortunately, only the cluster was able to be coded. The HUD still shows about a 3-4mph difference from the analog gauge. Little annoying.

texvette · 02-26-2014, 07:37 AM

They can all be off. LOL. I had a Buick one time that did not put on miles.
Drove to Florida and Back, seems it only put on a 100 or 200 miles. Than
you might drive down to the grocery and would be ok.

A friend drove the car and forgot to tell, do not go by the odometer. So he wanted
to go 20 miles for a turn. He drove an drove, it never got to 20 miles. I don't know
how far out of the way he went LOL LOL.

It was a low mileage Riv.

Draper · 02-26-2014, 07:40 AM

Quote:

Originally Posted by Toneaero

+1

I had mine coded to remove the "overestimation". Unfortunately, only the cluster was able to be coded. The HUD still shows about a 3-4mph difference from the analog gauge. Little annoying.

Interesting...I had the digital speedo enable during coding (like the M cars have) and this matches the analog gauge after the overestimation was removed.

I wonder why the HUD would be different.

Toneaero · 02-26-2014, 07:57 AM

Quote:

Originally Posted by jzbm3

Interesting...I had the digital speedo enable during coding (like the M cars have) and this matches the analog gauge after the overestimation was removed.

I wonder why the HUD would be different.

The digital matches the analog. My coder can't find the line that turns off the overestimation for the HUD. Anyone know where it's buried?

SchaumerMol · 02-27-2014, 05:26 AM

Quote:

Originally Posted by Toneaero

The digital matches the analog. My coder can't find the line that turns off the overestimation for the HUD. Anyone know where it's buried?

It's out there:
http://www.e90post.com/forums/showthread.php?t=516696

note46 · 02-27-2014, 10:01 AM

Quote:

Originally Posted by Capnhook

Plus! This would cause ~5% increase in odometer mileage being added to the truck that isn't being driven. If the truck has 50,000 miles driving, my wife's X5 will show 52,500 miles!

in reality only the speedo is off. the odometer is accurate. I forgot the actual law but there is a law in the US that require manufacturers to not indicate below the actual speed. bmw chose to go above and beyond

many people have complained to the dealer and the dealer fixes the "problem" by bending the speedo needle a little bit. I just learn to live with it.

FYI 49mph in my mini = 45mph and 50mph in my x5 = 45mph. i just learn what the difference is and adjust for it in my head.

02-23-2014, 11:17 AM	#1
Capnhook Private 12 Rep 95 Posts Drives: 2012 X5 35d Join Date: Jan 2014 Location: Texas iTrader: (1)	Speedometer off from factory? My wife's 2012 35d with sport package & 20" wheels, she noticed the other day on approach to two separate roadside radar speed indicators, that her speedometer & HUD is off by 3 mph. She informed me of this and I was thinking, no way it could be off by that much! Checked it with my gps, and it's also showing 3 mph off. The truck constantly is showing 3 mph UNDER speed, which should also throw off the odometer, racking up more miles than what is actually being driven on the truck. Anyone else checked their speedometers with gps? Nothing has been changed on this truck, it's all stock.
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02-23-2014, 01:16 PM	#2
RllyDrvrIX Private First Class 3 Rep 140 Posts Drives: '12 X5 Join Date: Dec 2013 Location: Lancaster, NY iTrader: (1)	2011 X5 is about 2mph above actual per Garmin GPS and iPhone 5 Map app.
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02-23-2014, 01:53 PM	#3
TazOjla Private First Class 29 Rep 175 Posts Drives: 2009 BMW X5 Join Date: Feb 2014 Location: United Kingdom iTrader: (0) Garage List 2007 BMW M5 [0.00] 2009 BMW X5 [0.00]	Never checked it but I'll have a go with my iPhone on the way to work
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02-23-2014, 06:01 PM	#4
retusn Private First Class 6 Rep 102 Posts Drives: 2013 X5M Join Date: Jun 2011 Location: Warrick County, IN iTrader: (0)	Mine is 4 MPH off. The M3 was also off by 4 MPH. __________________ 2013 E70 X5M 2011 E92 M3 traded in, 2009 CTSV LEMON, 2008 Z06 Lemon Law, 2007 Z06 Dealer butcher, 2004 Z06 (Sold) 1996 GrandSport (sold), 1996 Impala SS (Sold)
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02-23-2014, 06:21 PM	#5
texvette Private 2 Rep 56 Posts Drives: bmw Join Date: Apr 2013 Location: tx iTrader: (0)	I asked the dealer when got my 335i. Was told BMW's are on the conservative side with speedometer readings
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02-23-2014, 07:17 PM	#6
Draper Brigadier General 3460 Rep 3,995 Posts Drives: M4 Comp / Macan Turbo Join Date: Jan 2011 Location: Denver iTrader: (38)	It's an overestimation which for whatever reason is there by design, but it can be disabled through coding. __________________ Current: G82 M4 Comp xDrive // Frozen Deep Grey Current: 95B.1 Macan Turbo // Dark Blue Metallic
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02-23-2014, 08:11 PM	#7
BigBalls New Member 0 Rep 21 Posts Drives: X5 Join Date: Dec 2013 Location: RI iTrader: (1)	who said that gps speed is the real/actual speed ?
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02-24-2014, 06:10 AM	#9
SchaumerMol Private 6 Rep 65 Posts Drives: 2020 X7 M50 Join Date: Oct 2013 Location: Chicagoland iTrader: (0)	5km/h aka 3mph off by standard + tire/wheel diameter, and there you have your problem. I am sure mileage of the car is calculated differently by an ISO Standard or something.
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02-26-2014, 07:37 AM	#11
texvette Private 2 Rep 56 Posts Drives: bmw Join Date: Apr 2013 Location: tx iTrader: (0)	They can all be off. LOL. I had a Buick one time that did not put on miles. Drove to Florida and Back, seems it only put on a 100 or 200 miles. Than you might drive down to the grocery and would be ok. A friend drove the car and forgot to tell, do not go by the odometer. So he wanted to go 20 miles for a turn. He drove an drove, it never got to 20 miles. I don't know how far out of the way he went LOL LOL. It was a low mileage Riv.
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