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#1
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"MWarren" > wrote in message ... > 1991 318is > As near as I can tell, me speedometer reads 5-10 mph faster than I am > actually going. Was wonderng if there is any hope of fixing this or if I > just need to make the mental adjustment. Thanks. > > > Matt > > how do you know? the easiest fix is to run it for less than 1 hour i.e. keep to 59 minutes max. dj |
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#2
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Do you have smaller wheels on it than stock?
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#3
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MWarren wrote:
> 1991 318is > As near as I can tell, me speedometer reads 5-10 mph faster than I am > actually going. Was wonderng if there is any hope of fixing this or if I > just need to make the mental adjustment. Mental adjustment would be your best bet. For some reason, many Beamers' speedos read high, including mine. This subject has been discussed here previously. -- Cliff |
#4
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MWarren wrote:
> 1991 318is > As near as I can tell, me speedometer reads 5-10 mph faster than I am > actually going. Was wonderng if there is any hope of fixing this or if I > just need to make the mental adjustment. Thanks. > > > Matt > > As the BMW stealers are wont to say: "they all do that." -Fred W |
#5
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Germany has a law that requires no speedometer be pessimistic in its speed
reading. Sooo, BMW chooses to insure they are in compliance by installing optimistic speedometers. Typically 5 mph in the 65-75 mph range. R / John "MWarren" > wrote in message ... > 1991 318is > As near as I can tell, me speedometer reads 5-10 mph faster than I am > actually going. Was wonderng if there is any hope of fixing this or if I > just need to make the mental adjustment. Thanks. > > > Matt > > |
#6
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It should read faster than you are going. This keeps you from going too
fast. If the signs say 45, and your speedo says 45 but you are really doing 40, then you will never get a ticket if the speedo never goes above the number on the sign. You can calibrate your speedo with a stop watch and your Cruise Control. Set the Cruise to 80, then measure the time it takes to go a mile. It should take 45 seconds. The miles are marked on the side of the freeways. If you watch the right shoulder, you will see signs that count down as you go south or west. Typically a Call Box will be placed where one of these signs would belong, but not always. When you see a Call Box, there should be a sign in one half mile because the signs are normally placed at half-mile intervals. Do not use the odometer to click the miles off because if the speedo is having an error, the odometer will have an error too. You can use the signs to check your odometer (trip meter), and with a stop watch, you can calibrate your speedo. There are 3600 seconds in an hour, so if you divide 3600 by the time it takes to go a mile -- 360 / 40 = 90 mph, 3600 / 45 = 80 mph, 3600 / 48 = 75 mph, 3600 / 51.43 = 70 mph, 3600 / 60 = 60 mph. Alternatively, 3600 / 80 mph = 45 seconds. You can set your Cruise, and divide 3600 by the setting of the cruise to calculate the time it takes for the mile markers to whiz by, and use the stop watch to see where the markers should be. My speedometer is very nearly perfect between 60 and 90, myj guess is that it is accurate across the entire range -- but this is speculation. You didn't say what size tires you are running, but if your tires are too small, then the speedo will be too fast. "MWarren" > wrote in message ... > 1991 318is > As near as I can tell, me speedometer reads 5-10 mph faster than I am > actually going. Was wonderng if there is any hope of fixing this or if I > just need to make the mental adjustment. Thanks. > > > Matt > > |
#7
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Speedometer wrong?
1991 318is
As near as I can tell, me speedometer reads 5-10 mph faster than I am actually going. Was wonderng if there is any hope of fixing this or if I just need to make the mental adjustment. Thanks. Matt |
#8
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On Tue, 14 Jun 2005 14:57:49 -0700, "Jeff Strickland"
> wrote: >belong, but not always. When you see a Call Box, there should be a sign in >one half mile because the signs are normally placed at half-mile intervals. >Do not use the odometer to click the miles off because if the speedo is >having an error, the odometer will have an error too. My speedo is about 4mph high at 70 but the odometer is dead on... |
#9
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