I've read several places that the rocket speedometer isnt too accurate. How much is it off, and in which direction?

I go along with the flow of traffic on the interstate. Where I am driving, most cars usually go around 80. My speedo is saying around 88-90. Any idea how fast I am actually going?

I believe general consensus is its off by 6-7%. When my speedo reads 75 my GPS reads around 71.

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Harry
2008 Rocket 3 Touring

I just took a weekend through the Central Valley following my wife in the little SUV. I clocked her at 90 for about 1n hour and a half before we pulled off the freeway.

I told her that I was impressed that she did 90 the entire way. And she insisted that she had the cruise control set at 75. WTF!?!?!?!?

I'll be taking the bike in for a regular service this weekend. I'm told they can make the adjustments on it.

If my speeo reads 80mph i am doing 80mph thank you TUNEBOY

My speedo is so far off I have quit looking, Keep your eyes on the mirror for flashing lights, far more accurate

Social engineering at it's finest There was, and I see it hasn't changed, a ball park 7% high side error. Yes, the TuneBoy can adjust this pita.

I've found GPS devices and spedos have a guaranteed error unless you're dead still.

They must think we are all a bunch of saps. My BMW was just as far off. There was a fix. but it ment removing all the tupperware, 3-4 hours, resoldering a wire into a correct locatation, without frying the rest of the instruments, and reasemble tupperware. Ruin a day and take the chance of a $1800.00 melt down on the dash componants. What a POS

You may be right. At a dead stop my GPS and speedometer both read zero. I'm quite confident that both are correct.

BTW, with a Tuneboy 6% correction, my speedometer now reads 50 when the GPS shows 48.

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Harry
2008 Rocket 3 Touring

I think cops rely on the standard speedo error (not just on this bike, it's in just about every "modern" car I've owned).

When they pull you over and ask, "Do you know how fast you were going" and you're honest and tell them exactly what your speedo said, they'll ticket you based on your answer, even though they know you were barely over the limit.

Just a thought.

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Marcus

"I'd rather saw my own nads off with a kite string!" ~ Coach Hines

Current Toys
2005 Triumph Rocket III
1959 Chris Craft Conqueror

Recent Toys
2003 Honda S2000 #3414 SOLD
2006 Ariel Atom 2 300SC SOLD
2001 Bell 430 SOLD
1997.5 Hummer H1 HMCS SOLD
1997 Honda CBR1100XX Super Blackbird SOLD

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