Welcome to Bimmerfest -- The #1 Online Community for BMW related information! Please enjoy the discussion forums below and share your experiences with the 200,000 current, new and past BMW owners. The forums are broken out by car model and into other special interest sections such as BMW European Delivery and a special forum to voice your questions to the many BMW dealers on the site to assist our members!

Please follow the links below to help get you started!

Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E90/E91/E92/E93 (2006 - 2013)

E90/E91/E92/E93 (2006 - 2013)
The E9X is the 4th evolution of the BMW 3 series including a highly tuned twin turbo 335i variant pushing out 300hp and 300 ft. lbs. of torque. BMW continues to show that it sets the bar for true driving performance! -- View the E9X Wiki

Reply
 
Thread Tools Display Modes
  #1  
Old 10-31-2013, 03:29 PM
strongheart strongheart is offline
Registered User
Location: New York
 
Join Date: Oct 2013
Posts: 32
Mein Auto: 2006 330xi Barrique Red
New Owner, Speedo is inaccurate

Hello all. I bought a 2006 330 xi and I have an issue. My speedo is not accurate. It shows 40 but im really travelling at 36 mph, when the speedo says 80 mph im actually going 76 MPH. I know this because both of my GPS units say this. Also to check , i drove next to a friend of mine and we were at the same exact pace yet my speedo is still 4 mph less than whats actually displayed.

Is this a common problem? It has the sport package. The tires that are on it are 225/45/17 all around. Is this the stock size for the sport package?

Last edited by strongheart; 10-31-2013 at 03:32 PM.
Reply With Quote
Advertisement
  #2  
Old 10-31-2013, 03:45 PM
LarkHouston's Avatar
LarkHouston LarkHouston is online now
Doing the best I can
Location: Just another day in Paradise
 
Join Date: Aug 2009
Posts: 1,001
Mein Auto: 2009 335i Coupe
Depends on whether you consider it a problem. It is certainly common. And if I remember the discussions about it, the general consensus is that is intentional on BMW's part because of regulations related to the fact that speedometer can never read high, but can read low and still meet the standards.

Lots of discussions about this topic in many strings on this forum.
Check out Nordic's Sticky on conducting searches and you'll find much to read about the issue.
__________________
2009 335i e92
2013 Porsche Boxster S
2006 BMW Z4 3.0si- Gone, but not forgotten
Reply With Quote
  #3  
Old 10-31-2013, 03:53 PM
3ismagic#'s Avatar
3ismagic# 3ismagic# is offline
HerrDoktorProfessor
Location: land of milk and honey
 
Join Date: Mar 2011
Posts: 3,097
Mein Auto: '11 335d
New Owner, Speedo is inaccurate

Search is your friend. This is well-traveled territory.


Sent from BimmerApp mobile app
__________________

Entertaining America Since 1975
European Delivery July 26th 2011
ED Video:
ED Trip Report:http://www.bimmerfest.com/forums/sho...d.php?t=557294

335d| Deep Sea Blue| Black/Aluminum | Stuff | Gadgets | More Stuff | Power Whatnots | Auto-Verbing Nouns
BMWCCA #448878
Reply With Quote
  #4  
Old 10-31-2013, 04:12 PM
grijo grijo is online now
Officially Welcomed to the 'Fest
Location: Somerset County, NJ
 
Join Date: Aug 2009
Posts: 221
Mein Auto: 2013 BMW 328i Coupe
Your car is being nice to you by helping you avoid tickets.
__________________
2013 BMW 328i
2008 Honda S2000
1972 MB 250C
Reply With Quote
  #5  
Old 10-31-2013, 04:29 PM
bennyg1 bennyg1 is offline
Registered User
Location: Melbourne
 
Join Date: Oct 2012
Posts: 43
Mein Auto: 1993 540iA
Re: New Owner, Speedo is inaccurate

Short answer speedos are not 100% accurate and are deliberately calibrated to have the inaccuracy show as overestimation

It means you need not stress if your needle goes a little bit over the limit.
Reply With Quote
  #6  
Old 10-31-2013, 04:30 PM
strongheart strongheart is offline
Registered User
Location: New York
 
Join Date: Oct 2013
Posts: 32
Mein Auto: 2006 330xi Barrique Red
thanks for the info. problem is I will just drive faster to compensate lol What are the stock size tires on this car? It has the sport package, some info says 17 staggerd some 18. not sure which replacement sizes to get since I want to make it staggered again. The rims are 17". can they use the wider tires in the rear even though the rims now have even tires all around?

Last edited by strongheart; 10-31-2013 at 04:33 PM.
Reply With Quote
  #7  
Old 10-31-2013, 06:22 PM
pointandgo's Avatar
pointandgo pointandgo is offline
bimmerfest Supporting Member
Location: Los Angeles area
 
Join Date: Apr 2010
Posts: 4,784
Mein Auto: '13 F10 535i (loaner)
Quote:
Originally Posted by strongheart View Post
thanks for the info. problem is I will just drive faster to compensate lol What are the stock size tires on this car? It has the sport package, some info says 17 staggerd some 18. not sure which replacement sizes to get since I want to make it staggered again. The rims are 17". can they use the wider tires in the rear even though the rims now have even tires all around?
My sources show that the '06 330 xi came originally equipped with 225/45R17 91H front and rear on 8.0" (J) wheels. The sport package came with 18" tires according to my source.
__________________
F30 328i
E90 328i
E92 335i 6MT
E46 M3 6MT
E39 528i 5MT
MBz W140 S320
MBz W124 300E (slammed)
(unmentionables in between)
'71 AMC Javelin (4-Spd Stick on the floor)
'67 Pontiac Firebird 'cabrio' (1st car - "the leaker")
------------------------------------------------------------------------
Member: BMW CCA
Reply With Quote
  #8  
Old 10-31-2013, 06:31 PM
MMME30W's Avatar
MMME30W MMME30W is online now
Super Moderator
Location: On The Move
 
Join Date: Jul 2003
Posts: 14,151
Mein Auto: 2009 W906
Quote:
Originally Posted by strongheart View Post
Hello all. I bought a 2006 330 xi and I have an issue. My speedo is not accurate. It shows 40 but im really travelling at 36 mph, when the speedo says 80 mph im actually going 76 MPH. I know this because both of my GPS units say this. Also to check , i drove next to a friend of mine and we were at the same exact pace yet my speedo is still 4 mph less than whats actually displayed.

Is this a common problem? It has the sport package. The tires that are on it are 225/45/17 all around. Is this the stock size for the sport package?
Read this.

http://www.bimmerfest.com/forums/sho...62&postcount=8

In memory of Herr Baumann.
Reply With Quote
  #9  
Old 10-31-2013, 06:34 PM
pointandgo's Avatar
pointandgo pointandgo is offline
bimmerfest Supporting Member
Location: Los Angeles area
 
Join Date: Apr 2010
Posts: 4,784
Mein Auto: '13 F10 535i (loaner)
E.U. regulations (UNECE) dictate that the indicated speed must never be less than the actual speed, i.e. it should not be possible to inadvertently speed because of an incorrect speedometer reading. The OP's "error" sounds about right.
__________________
F30 328i
E90 328i
E92 335i 6MT
E46 M3 6MT
E39 528i 5MT
MBz W140 S320
MBz W124 300E (slammed)
(unmentionables in between)
'71 AMC Javelin (4-Spd Stick on the floor)
'67 Pontiac Firebird 'cabrio' (1st car - "the leaker")
------------------------------------------------------------------------
Member: BMW CCA
Reply With Quote
  #10  
Old 10-31-2013, 06:56 PM
Nordic_Kat's Avatar
Nordic_Kat Nordic_Kat is offline
Omnia moderata ratione
Location: Texas
 
Join Date: Aug 2009
Posts: 7,290
Mein Auto: Certified Garage Princess
Quote:
Originally Posted by MMME30W View Post
Read this.

http://www.bimmerfest.com/forums/sho...62&postcount=8

In memory of Herr Baumann.
+1

Here in the US of A this may seem superfluous, but in Europe it has significance. We were in Southern France earlier this fall and were clocked by a speed camera going 95 km/hr in a 90 km/hr zone. This translates to going 59 mi/hr in a 56 mi/hr zone and the fee amounted to about $85 USD. And this was in a Hyundai!!!! What is amazing to me is that the ticket was literally 6 pages and included the European standard for speedometer readings which meant that we could have actually been going 92 km/hour (the horror!!)

Personally, I kind of like the fact that if I've settled into what seems to be 10-12 miles over the speed limit, I'm still in that magic '9 your fine' zone of grace the US LEO's tend to tolerate.
__________________
If your sport doesn't put blood, dirt or grease under your fingernails,
then it's just a game.

Euro Modded|Split Armrest|Rear Foglight Mod|BMW Performance Exhaust|CDV Delete|Shark Fin Antenna Delete|Front Reflector Delete|LUX H8 Angel Eyes|328i|3 Pedals|Das Fahren im Freien| BMWCCA#445793
Reply With Quote
  #11  
Old 10-31-2013, 07:02 PM
MMME30W's Avatar
MMME30W MMME30W is online now
Super Moderator
Location: On The Move
 
Join Date: Jul 2003
Posts: 14,151
Mein Auto: 2009 W906
New Owner, Speedo is inaccurate

^^^ I always heard "eight you're great" vs. "nine you're mine!"


Sent from BimmerApp mobile app
__________________
“Character is doing the right thing when nobody’s looking. There are too many people who think that the only thing that’s right is to get by, and the only thing that’s wrong is to get caught.”

- J.C. Watts Jr.
Reply With Quote
  #12  
Old 10-31-2013, 07:13 PM
pointandgo's Avatar
pointandgo pointandgo is offline
bimmerfest Supporting Member
Location: Los Angeles area
 
Join Date: Apr 2010
Posts: 4,784
Mein Auto: '13 F10 535i (loaner)
Quote:
Originally Posted by Nordic_Kat View Post
+1

Here in the US of A this may seem superfluous, but in Europe it has significance. We were in Southern France earlier this fall and were clocked by a speed camera going 95 km/hr in a 90 km/hr zone. This translates to going 59 mi/hr in a 56 mi/hr zone and the fee amounted to about $85 USD. And this was in a Hyundai!!!! What is amazing to me is that the ticket was literally 6 pages and included the European standard for speedometer readings which meant that we could have actually been going 92 km/hour (the horror!!)

Personally, I kind of like the fact that if I've settled into what seems to be 10-12 miles over the speed limit, I'm still in that magic '9 your fine' zone of grace the US LEO's tend to tolerate.
I guess you were in a Hyundai because you couldn't find a Chevy Aveo.

The U.S. doesn't have a speedometer accuracy reg. for passenger vehicles (only an ancient (5 mph) reg. for commercial vehicles). There may be a SAE speedometer calibration standard for automakers.

Considering what we know now (except for those who drive Hyundais in Europe ), I would guess that European car drivers in the U.S. tend to get fewer speeding tickets than drivers of domestic models?
__________________
F30 328i
E90 328i
E92 335i 6MT
E46 M3 6MT
E39 528i 5MT
MBz W140 S320
MBz W124 300E (slammed)
(unmentionables in between)
'71 AMC Javelin (4-Spd Stick on the floor)
'67 Pontiac Firebird 'cabrio' (1st car - "the leaker")
------------------------------------------------------------------------
Member: BMW CCA
Reply With Quote
  #13  
Old 10-31-2013, 10:12 PM
floydarogers's Avatar
floydarogers floydarogers is offline
Pedant and Curmudgeon
Location: Renton, WA
 
Join Date: Oct 2010
Posts: 3,616
Mein Auto: 335d, 328d, Toyota T100
Quote:
Originally Posted by pointandgo View Post
...
The U.S. doesn't have a speedometer accuracy reg. for passenger vehicles (only an ancient (5 mph) reg. for commercial vehicles). There may be a SAE speedometer calibration standard for automakers.
From the car and driver article: "So we sought out the rule book to find out just how much accuracy is mandated. In the U.S., manufacturers voluntarily follow the standard set by the Society of Automotive Engineers, J1226, which is pretty lax. To begin with, manufacturers are afforded the latitude to aim for within plus-or-minus two percent of absolute accuracy or to introduce bias to read high on a sliding scale of from minus-one to plus-three percent at low speeds to zero to plus-four percent above 55 mph. And those percentages are not of actual speed but rather a percentage of the total speed range indicated on the dial. So the four-percent allowable range on an 85-mph speedometer is 3.4 mph, and the acceptable range on a 150-mph speedometer is 6.0 mph"

So, while no FMVSS is specified, the result is a standard.
Reply With Quote
  #14  
Old 11-01-2013, 07:04 AM
fdriller9 fdriller9 is offline
Officially Welcomed to the 'Fest
Location: NJ/Philly
 
Join Date: Oct 2006
Posts: 3,055
Mein Auto: '06 AW 330xi
You can have the correction coded off in the KOMBI module. There is a value for both the digital display (which needs to be activated on non-m models) and analog dials.
__________________

| LCI Msport Conversion | Custom Kevlar/Carbon Fiber Wind Splitter | Exotic Tuning Front Lip | H&R Coilovers | M3 Subframe Bushings | E93 M3 23.6mm Rear Sway Bar | Whiteline 27mm Front Sway Bar | Ground Control Camber Kit | L7 | Hand-Made LED Angel Eyes | Breyton GTS-R | Bridgestone Pole Position S-04 | CarPC with Centrafuse Front End | Alpine MRP-M500 | Custom LED Reverse Lights | OEM Blacklines | BMW Performance Trunk Spoiler |
Reply With Quote
  #15  
Old 11-03-2013, 12:14 PM
strongheart strongheart is offline
Registered User
Location: New York
 
Join Date: Oct 2013
Posts: 32
Mein Auto: 2006 330xi Barrique Red
nice. I am going to pick up the USB cable so I can change options with the coding software.

I noticed today there is another gauge on the outer rim of the speedometer that popped up today for a short time but then hid away from view when it went all the way down. does anyone know what it is for?
Reply With Quote
  #16  
Old 11-03-2013, 01:14 PM
gcreese gcreese is offline
Officially Welcomed to the 'Fest
Location: Massachusetts
 
Join Date: Feb 2009
Posts: 600
Mein Auto: 2010 535i Sports Wagon
Quote:
Originally Posted by strongheart View Post
nice. I am going to pick up the USB cable so I can change options with the coding software.

I noticed today there is another gauge on the outer rim of the speedometer that popped up today for a short time but then hid away from view when it went all the way down. does anyone know what it is for?
You may be referring to the indicator for the Cruise Control, which zooms around on the periphery of the speedometer. Check it out in the User Manual to see if that's what you saw.
__________________

2010 535i xDrive Sport Wagon (April 2009): Deep Sea Blue / Cream Beige / Sport, Premium, Cold Weather Packages
2011 335i xDrive Coupe (April 2011, European Delivery): Le Mans Blue / Oyster-Black / M Sport, Premium, Convenience Packages
Reply With Quote
  #17  
Old 11-03-2013, 03:40 PM
Tom K. Tom K. is offline
Officially Welcomed to the 'Fest
Location: Maryland
 
Join Date: May 2008
Posts: 2,576
Mein Auto: '07 328iT.'13 Boxster
Quote:
Originally Posted by gcreese View Post
You may be referring to the indicator for the Cruise Control, which zooms around on the periphery of the speedometer. Check it out in the User Manual to see if that's what you saw.
That certainly sounds like the cruise control indicator.

Tom
Reply With Quote
  #18  
Old 11-03-2013, 07:55 PM
Pilgrim Pilgrim is offline
Officially Welcomed to the 'Fest
Location: Fort Collins, CO
 
Join Date: Aug 2006
Posts: 470
Mein Auto: 2009 328iX Coupe
I suppose that if you can calculate the error percentage of the speedo with the stock tires, you can choose replacement tires with just enough increased diameter to compensate for the error.

Tire rack posts the diameters and other specs of all their tires, including revolutions per mile and the percentage of difference in revolutions per mile of tires A through Z.
__________________
1983 Datsun 280ZX Turbo
2009 BMW 328iX Coupe
2007 Nissan Murano

Last edited by Pilgrim; 11-03-2013 at 07:56 PM.
Reply With Quote
  #19  
Old 11-04-2013, 05:37 PM
MP3_E46's Avatar
MP3_E46 MP3_E46 is offline
Code/wrench Monkey
Location: Atlanta
 
Join Date: Oct 2003
Posts: 1,044
Mein Auto: Miata NC2
+1 for coding. The 'v display' tracks what my GPS says

The same info can be seen using the Torque app and a ~$20 ELM327 bluetooth interface. That's a breeze to get running but cannot do coding on BMWs. I did use it to turn off the reverse beep on my Prius but I guess Toyota's coding is simpler.

Interestingly my MX-5 speedo is almost spot on. I think the Prius shows only slightly over.
__________________


Six Euro Deliveries since December 1998 (Owned E46, E90, E91, E92 and E93)

28 vehicles in 26 years of driving so far. Guess I like cars

Last edited by MP3_E46; 11-04-2013 at 05:39 PM.
Reply With Quote
  #20  
Old 11-08-2013, 08:17 AM
strongheart strongheart is offline
Registered User
Location: New York
 
Join Date: Oct 2013
Posts: 32
Mein Auto: 2006 330xi Barrique Red
Quote:
Originally Posted by MP3_E46 View Post
+1 for coding. The 'v display' tracks what my GPS says

The same info can be seen using the Torque app and a ~$20 ELM327 bluetooth interface. That's a breeze to get running but cannot do coding on BMWs. I did use it to turn off the reverse beep on my Prius but I guess Toyota's coding is simpler.

Interestingly my MX-5 speedo is almost spot on. I think the Prius shows only slightly over.
Im not sure what you mean by cannot do coding on BMWs. I thought you could modify the code to change things like disabling seat belt chime, fixing the speedometer accuracy, or activating the digital speedo.
Reply With Quote
  #21  
Old 11-08-2013, 08:28 AM
MP3_E46's Avatar
MP3_E46 MP3_E46 is offline
Code/wrench Monkey
Location: Atlanta
 
Join Date: Oct 2003
Posts: 1,044
Mein Auto: Miata NC2
Quote:
Originally Posted by strongheart View Post
Im not sure what you mean by cannot do coding on BMWs. I thought you could modify the code to change things like disabling seat belt chime, fixing the speedometer accuracy, or activating the digital speedo.
Via an ELM 237? I use a d-can USB cable and BMW specific coding software.
__________________


Six Euro Deliveries since December 1998 (Owned E46, E90, E91, E92 and E93)

28 vehicles in 26 years of driving so far. Guess I like cars
Reply With Quote
  #22  
Old 11-08-2013, 08:46 AM
ctuna ctuna is offline
Officially Welcomed to the 'Fest
Location: usa
 
Join Date: Jan 2010
Posts: 2,297
Mein Auto: 325xi wagon
Digital speed can have the correction factor nulled.

Digital speed can have the correction factor nulled.
Apparently they put in a correction factor to make the speed
look high and the guys in the coding forums have figured out
how to disable it for digital speed.
Reply With Quote
  #23  
Old 11-08-2013, 09:30 AM
strongheart strongheart is offline
Registered User
Location: New York
 
Join Date: Oct 2013
Posts: 32
Mein Auto: 2006 330xi Barrique Red
Quote:
Originally Posted by MP3_E46 View Post
Via an ELM 237? I use a d-can USB cable and BMW specific coding software.
I bought the cable for it its on its way BMW INPA/Ediabas SSS NCS K+D-CAN USB Interface
and will install INPA, EDIABAS, NCSExpert, NCS Dummies, DIS/GT1, EasyDIS, & Progman so I can modify a wide array of options.
Reply With Quote
  #24  
Old 11-08-2013, 09:32 AM
strongheart strongheart is offline
Registered User
Location: New York
 
Join Date: Oct 2013
Posts: 32
Mein Auto: 2006 330xi Barrique Red
I also have a question. I see the car can support 17x8 and rear 17x8.5 staggered. Do I need to buy rims that are 8.5 inches for the rear or can I just put on wider tires in the rear? My car came with the type 158 rims. I want to keep 17" wheel size but still run staggered even if I have to buy wider rims for the rear. Can I buy type 161 wheels and install them? WIll it mess with my all wheel drive?

Im trying to figure out acceptable offsets if I want to run other BMW style wheels. Is there a chart or page that shows which rims will fit on which model BMWs?

Last edited by strongheart; 11-08-2013 at 10:01 AM.
Reply With Quote
  #25  
Old 11-08-2013, 11:25 AM
///M-ratedE90's Avatar
///M-ratedE90 ///M-ratedE90 is offline
Ego writing cheques that
Location: the body cannot cash
 
Join Date: May 2008
Posts: 6,183
Mein Auto: Subaru Forester
Quote:
Originally Posted by strongheart View Post
I also have a question. I see the car can support 17x8 and rear 17x8.5 staggered. Do I need to buy rims that are 8.5 inches for the rear or can I just put on wider tires in the rear? My car came with the type 158 rims. I want to keep 17" wheel size but still run staggered even if I have to buy wider rims for the rear. Can I buy type 161 wheels and install them? WIll it mess with my all wheel drive?

Im trying to figure out acceptable offsets if I want to run other BMW style wheels. Is there a chart or page that shows which rims will fit on which model BMWs?
You are only allowed one unresearched post per thread, as per EU regulations.
__________________
=================================================
=================================================
=================================================
Also available in Alpine White...
Reply With Quote
Reply

Bookmarks


Forum Navigation
Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E90/E91/E92/E93 (2006 - 2013)
Today's Posts Search
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On



Forum Jump


All times are GMT -7. The time now is 03:14 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
© 2001-2011 performanceIX, Inc. All Rights Reserved .: guidelines .:. privacy .:. terms