Speedometer calibration

Hey everyone. I upgraded my wheels and well I got pulled over. I was running 47 and she clocked me at 53. I knew since I put 33's on ,then the speed would be off a little. Anything I can do to recalibrate the speedometer?

 

I am changing the axle ratios from 4.10 to 3.91 in my 04 SR5 w 4WD, in an attempt to improve fuel mileage.

Can the dealer or someone else re-calibrate my speedo?

Those who go to lift kits & tall tires have a more serious problem, as they are driving faster than their speedo indicates.

What does everyone do to correct this? Just live with it and estimate their speed? I want some accuracy in knowing my true fuel consumption per mile.

Len