Accuracy of instruments? - BMW G310 R/GS Forum
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post #1 of 9 (permalink) Old 06-28-2018, 11:36 PM Thread Starter
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Accuracy of instruments?

Has anyone compared the indicated MPH and Odometer, readings to a GPS? Fuel level vs gals pumped?

What is the percentage variance?

Thank you

Last edited by dave92029; 06-28-2018 at 11:39 PM.
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post #2 of 9 (permalink) Old 06-29-2018, 12:12 AM
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The speed is actually pretty good, if a little optimistic, by about 2-5 %

The fuel level, is eeeesh, clearly thought out to prevent you from getting out of gas.

The range reading is actually not bad.


At the end of the day, 11 litres is not a big gas tank, but then again it's not a sportster.....

But I do prefer to err on the safe side and keep the tank as full as I can, often fuelling for less than $10
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post #3 of 9 (permalink) Old 06-29-2018, 12:29 PM
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Recent test in Motorcycle Consumer News said that the actual speed when the speedometer reads 65 is 63 mph. That's pretty good and in the same range as most cars. Regarding the fuel gauge I've no empirical evidence yet. That's a so-far-so-good situation!
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post #4 of 9 (permalink) Old 06-29-2018, 01:10 PM
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My MPG is always way off. On the last tank was showing 59 mpg avg and I actually got close to 65.
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post #5 of 9 (permalink) Old 06-29-2018, 01:28 PM
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Topped up fuel with 14km range showing. It took 9.7 L so I had 1.3 L left, maybe 35km, not bad. A small error on the safe side is OK.
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post #6 of 9 (permalink) Old 06-29-2018, 07:22 PM
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My speedo is right on up to 60kph when comparing it to our local speed awareness signs.
After that I am not too sure.
As for mileage, I don't calibrate that on anything I drive, it is what it is.
Having said that, it's pretty darn good on this thumper as I can go for quite a
long time between fill ups.
I am not ever too far from a gas station, maybe an hour at most, so I just top up if
I'm off to play in the woods for awhile.
I don't do any long distance touring anymore, so I don't have to worry about MPG.
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post #7 of 9 (permalink) Old 06-30-2018, 11:08 AM
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Quote:
Originally Posted by dave92029 View Post
Has anyone compared the indicated MPH and Odometer, readings to a GPS? Fuel level vs gals pumped?
My G310GS has not yet arrived. When it does I will check the speedometer speed against GPS speed.

Is there a mount to attach a BMW Nav 6 to a G310GS?

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post #8 of 9 (permalink) Old 08-14-2018, 11:18 PM
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Quote:
Originally Posted by Arion View Post
Recent test in Motorcycle Consumer News said that the actual speed when the speedometer reads 65 is 63 mph. That's pretty good and in the same range as most cars. Regarding the fuel gauge I've no empirical evidence yet. That's a so-far-so-good situation!

That's exactly what my GPS indicates also ... 65mph is 63mph. 90mph indicated is really 87mph. I have not done the top speed test yet. When my low fuel light comes on it will take two gallons to fill the tank and I've ridden about 140-150 miles. Yes, I really am getting 70-75mpg and I run it like a scalded cat. I run BMW recommended tire pressures F32/R33, have 2200 miles on it, I'm 5'9" - 155lbs.

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post #9 of 9 (permalink) Old 08-15-2018, 06:07 AM
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Originally Posted by bbbelanger View Post
At the end of the day, 11 litres is not a big gas tank, but then again it's not a sportster...
My '60 Sportster had a 2.2 gallon (8.3 liter) tank. It actually worked out well - by the time you needed fuel, you also needed time off the bike - what with the rigidly mounted engine.

Quote:
Originally Posted by bbbelanger View Post
But I do prefer to err on the safe side and keep the tank as full as I can, often fuelling for less than $10
Yup - buy fuel when you can, not when you need to. The only time you can have too much fuel is when you're on fire.

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