Which do I trust? (speedometer or GPS)
Tue, 10/16/2007 - 5:55pm
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  17 years
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My nuvi 650 tells me I am going one speed, my spedometer tells me I'm going a few MPH slower. At 70, by the nuvi, it says almost 74 on the speedometer.... I'm inclined to think the nuvi has it right..
I don't understand
Why is it that some threads that deserve to die a nice peaceful death don't?
This thread has ONLY been going on for 4 3/4 years.
MrKenFL- "Money can't buy you happiness .. But it does bring you a more pleasant form of misery." NUVI 260, Nuvi 1490LMT & Nuvi 2595LMT all with 2014.4 maps !
+1
Why is it that some threads that deserve to die a nice peaceful death don't?
You said it. Enough is enough. RIP
NUVI40 Kingsport TN
You would have to swag that
nevermind, it's not 2d.
Trust the GPS
Im not sure how accurate the dot speed camera boxes are, but everytime i have drove by one the speed on the box matched the speed on my GPS everytime. Speed ometers arent very accurate especially the fact that different tires can effect them, but that is just my opinion.
All mine agree
my car, gps, speed cameras on the side of the road telling how fast you are going all agree.
Today is a gift, that's why they call it the present...
speed
speed
Trust no one!
My guess is the GPS is more accurate once going at a constant speed for a long period of time in an area with good reception.
Too many variables to rely on the speedometer, including the calibration of the speedometer and tire wear. Although on tire wear, the car talk guys say the variation would be a 3-4% increase in speedometer reported speed as the tire wears down.
http://www.cartalk.com/content/how-much-does-tread-wear-affe...