Speedometer not accurate

[Sagebrush]

A GPS app on your phone is only accurate for straight stretches. I've checked mine, and I'm within 1 MPH.

Close enough.

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[Daveintb]

After I swapped out my tires to 33”, I took it to the dealer to have the speedometer programmed as I wanted an accurate speedo. After checking with his techs the service manager told me that they have no way of doing that. . Guess I’m just stuck with a 3-4 off speedo.

 

[ambit]

My SR5 is low by 2-3 mph at "80" and the gas milage remaining lies too.

 

[tacorancher]

I put 275/70/18s which are almost an inch taller and my speed still shows I’m 1-2pm mph slower than GPS lol…. Guess I need to go even bigger.

I drove 150+ miles today at 65-75 mph and it was off 2mph most of the way (showing 2mph slower than actual)

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