Actual vs Indicated Speed - Stromtrooper Forum : Suzuki V-Strom Motorcycle Forums
DL650 and DL650A - 2004 to 2011 DL650 from 2004-2006 (K4-K6) and DL650 or DL650A from 2007-2011 (K7-L1)

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post #1 of 27 Old 05-15-2019, 07:42 PM Thread Starter
Hmm
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Actual vs Indicated Speed

I've got a K8 Wee with stock size tires. Running on the interstate yesterday, it sure seemed like my bike's speedometer was very optimistic. I have nothing solid to base this on other than the cars on the road passing me continually. The area that I rode in has a speed limit of 75 and with my speedo showing 80 I was with big trucks in the slow lane.

Is there any chart of information that someone has compiled referencing indicated vs. actual speed?

Bill
I been down around Houston Texas where the sun shines most of the time.

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post #2 of 27 Old 05-15-2019, 08:28 PM
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On my 2017 Wee, indicated is about 8% higher than actual.
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post #3 of 27 Old 05-15-2019, 10:09 PM
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If you own a car GPS and it has the MPH mode stick it on your bike and compare the two readings. My 08 DL650 odometer reads about 6kph faster than actual at 80 kph in relation to the GPS. Seems the bike manufactures err on the side of caution when it comes to bike speedometers.
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Last edited by gdrew; 05-16-2019 at 03:15 AM.
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post #4 of 27 Old 05-15-2019, 10:52 PM
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There are a few threads about this on the forum. Seems like every Strom has a speedo that reads 8% faster than reality.
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post #5 of 27 Old 05-16-2019, 12:24 AM
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Lots of free speedo apps for your phone. Download one, stick it on your bars for a couple rides. Then you'll know. All my bikes think they're faster than they are. Just like me.
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post #6 of 27 Old 05-16-2019, 02:04 AM
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Australias design rules state a speedo can read 10% plus 4 km/h more than the actual speed but cannot read below the actual speed.
So it stands to reason that the manufacturers build in a bit of leeway.
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post #7 of 27 Old 05-16-2019, 05:13 AM
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My K9 DL650 shows 108 km/hr for a GPS actual 100 km/hr. Consistently.

2010 Weestrom; 2017 Kawasaki Versys-X300; 1988 Suzuki GSXR1100
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post #8 of 27 Old 05-16-2019, 10:05 AM
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And that is when Austin at RaceRatB comes in with handy modified speedo faceplates that correct the discrepancy.

Raceratb.com
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-ZR
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post #9 of 27 Old 05-16-2019, 01:23 PM
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8% seems to be the number. I just figure 5%, which is easy math to do without pencil and paper. That way I know I'm very close to actual and still on the safe side of the law. Either that or I just go fast as hell because it's fun.
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post #10 of 27 Old 05-16-2019, 01:56 PM
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My Fazer 8 seems to read exactly the same 8% high as my Strom did.

My R1200RT seems to show a speed closer to reality, maybe 2-3 % high.
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