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BMW 3-Series (E90 E92) Forum
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BMW Intentionally Gives Us Inaccurate Speedometers!
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06-25-2007, 09:40 AM | #89 | |
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I think the German speedometer error is a DIN thing, German manufacturers are required to certify that the car is at least as fast as the instrument indicates. If they publish a certain 0-60 number, the worst BMW built on the worst day of the week during Oktoberfest will be be at least that fast. (I have been stuck behind new BMWs (temporary tags) twice in the last few weeks that were clogging up the left hand lane at about 5-7MPH less than the normal traffic speed in the area. ("The ultimate moving chicane"???) I happen to think left lane bandits should be shot and probably a lot of other drivers think the same thing. BMW dealers should at least clue buyers in about the speedometer error.) |
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06-25-2007, 09:47 AM | #90 |
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06-25-2007, 09:51 AM | #91 | |
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06-25-2007, 11:15 AM | #93 |
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RichP - But how fast (actual speed) is forum going downhill? Really... all people want is for a car company (any company) to do the best that they can when providing a product. This means acurate guages too.
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06-25-2007, 11:17 AM | #94 |
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wtf? Dude how much pain have you gotten from not knowing your exact speed?
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06-25-2007, 12:03 PM | #97 | ||
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My response was.... Quote:
Pain? This response makes no sense.
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06-25-2007, 12:21 PM | #98 |
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You asked "Dude how much PAIN have you gotten..." I didn't know what you meant. Thank you for clearing that up. I haven't 'gotten' any pain due to a guage that doesn't function as good as it COULD. My overall point is - if, in fact, BMW did do something, anything, to make the reading anything other than it truly is, then they spent as much just as much energy. I don't have proof either way that BMW did or didn't do anything of the like. I don't like to be deceived, nor do I like PAIN.
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06-25-2007, 12:31 PM | #99 |
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Something I found on while looking at the bulletins.....
get over it guys... its normal... A certain amount of "speedometer advance" is necessary to compensate for negative tolerances in tire diameter, electronic controls, and other factors. This advance reduces the risk of the speedometer displaying a speed that is less than the vehicle's actual speed. The amount of speedometer advance can be calculated by inputting a frequency (using the DIS Tester, "Kombi Test Schedule") that corresponds to a given speed and noting the speed that is indicated by the speedometer. The maximum permitted speedometer advance is 10% of the actual (input) speed plus 2.4 mph. Example: Actual Speed = 50 mph 50 mph x 10% = 5 mph; 5 mph + 2.4 mph = 7.4 mph Therefore, the permissible displayed speed is 50 to 57.4 mph. (Note: The displayed speed must never be less than the actual speed). No repairs should be attempted if the speedometer advance is within 10% + 2.4 mph. NOTE: The amount of speedometer advance has no effect on recording of accumulated mileage in the odometer display. The odometer records total mileage digitally and does not incorporate any "advance" tolerances.
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06-25-2007, 01:44 PM | #101 |
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The guage is working perfectly! Its reading just as BMW engineers want it to read. I like how it works.
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06-25-2007, 02:03 PM | #102 |
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06-25-2007, 08:17 PM | #103 |
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Wow, you guys should let this go. This thread is more than a year old!
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06-25-2007, 08:49 PM | #104 |
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06-26-2007, 08:01 AM | #107 | |
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Poor lane discipline is a killer, leading to multi vehicle accidents. The “Montana Anomaly”, where their highway fatal accident rate INCREASED 54% when they transitioned from no speed limits to a posted 75, is attributed by some engineers to a decrease in lane discipline. Basically the “I am going the speed limit so I can sit here in the left lane” mentality. I agree with the suggestion that those sitting in the left lane blocking traffic should be shot. This would not only improve traffic flow, it would also improve the gene pool. And as far as the speedometer reading precisely, even a perfect one is only one tire change away from being off a few MPH. I think BMW has handled this in a reasonable manner. |
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06-26-2007, 09:33 AM | #108 | |
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But I think 95% of the reason is the same as BMWs cars -- to give the psychological impression that you're zooming faster than you are. The discerning driver simply calculates the fudge factor of -5% in his/her head so this strategem only works on the unobservant. |
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06-27-2007, 05:27 AM | #109 |
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Definitely.
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06-27-2007, 06:49 AM | #110 | |
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Both of the temorary-tag "Ultimate Moving Chicane" BMWs were passing the traffic in the right lane, albeit only creeping by 1-2MPH faster. There were large open spaces directly ahead which the next 20 vehicles in the left lane -- mostly vehicles with more-or-less accurate speedometers -- could also see. This could be one of the many reasons why BMW drivers have a PR problem. There are others, but expensive fast cars dawdling in the left lane is probably even more irritating to the hoi polloi than decrepit slow cars dawdling in the left lane. |
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