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Dodge Ram Wheels And Tires General discussion related to wheels and tires.

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Old 06-20-2014, 05:23 PM
hemi deep hemi deep is offline
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Default 17" tire gps mph?

I was going to get my trucks computer adjusted for my new 33" tires. I checked my speed at 120k(via GPS), it's now only 3k off. Any stock wheeled 17" owners out there able to GPS on cruise at 120k?
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Old 06-22-2014, 10:15 PM
OldPoop55 OldPoop55 is offline
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No but, I bought a Speedometer Calibrator from Hypertech when I upgrade my stock 2500 to 35 inch tires. Pretty easy to use and I am not mechanic. Took a couple test runs of adjusting tire sizes but, my speedometer matches my GPS.

If this helps any.

A helpful hint. This device marries itself to your truck. It cannot be used on more than one truck.
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Old 06-22-2014, 11:55 PM
ryan69 ryan69 is offline
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Not sure, but after I put on my 33's I was 3kmh over just like you are.
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