Recently completed a Tour if Honor run with 1700 miles. Half was Interstate highways. Running normally at 80 mph on the speed, my GPS had me at 74!
I have a 2014 Ultra Classic with it mostly stock and nothing done to Tranny, rims, or gauges. What could cause a 10% loss if MPH readings? Is this normal?
Do I have to pay for another Dealer scan? These are getting expensive!

 

Using 74 mph as the base figure, a 6 mph error is 8.1% and only 7.5% if 80 mph is the base figure. No scan should be needed to find out if that error is within Harley tolerance. Speedos are made to register only with high side errors to keep customers from coming back to the company wanting reimbursements for speeding tickets and raised insurance rates. An error that big sounds excessive to me, but I don't work for Harley Adjustments through the ECM are possible but a dealer may not be willing to make them or even know how to.

 

It's more around 7-8 mph under the indicated gauge, however it starts around 45mph and increases with the speed. Thinking this is more than a bad gauge, but maybe something else.
Need more information before spending money frivolously.

 

It seems like every Harley I had was off on the speedo indication.
It seems to be 5MPH high on most of them at about 50MPH or so.
There might be nothing wrong with the bike, just the old sloppy Harley speedo.

 

Mines off by about the exact same amount. Local dealer here in Canada refuses to fix it or even care on bit. Says it's the official Harley position to not do anything. Tjis is a 20 CVO and get treated like **** at the dealership. Good luck getting them to make any adjustments, they just don't care. I'll are the fix myself when I get a TTS on it.

 

Should they treat you better because you bought a CVO versus the guy who bought a used Sporty? They have the "they all do that" mentality.

Besides:
1. they don't give a crap what bike you bought
2. they won't waste their time on trivial matters

 

Your completely right. . .

I've seen this with car dealerships too,, once they have the money they could give a f . . .
Anyway the bright side is its sunny, the weather is amazing and the road is never ending with so many better more healthy things to experience. I'm heading out . . .

 

Don't blame H-D it's a US gov requirement that speedos be accurate to within 5 km at 50 kmph. Would you rather it read lower than actual and have you racking up a pile of speeding tickets? Taking the safe and logical approach most car, truck and motorcycle manufacturers have the speedos reading higher than actually speed. If you know the error percentage then you know how fast you are going.

 

Well thats idiotic and a cop-out.
There is no excuse to have the reading incorrect, All my 4 wheel vehicles and my other 2 wheels are spot on, even my 80 year old ones. It can be done its just laziness and not pride in work!

 

I snuck up on this thinking I was going to see a beer belly in a bathing suit.