Please look at my TORQUE APP screen shot.

[TURNz]

Which now makes me wonder what these wheels came off of, since they are 17s, not the factory 16.

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[iamdub]

Actually, all modern cellphones have an actual GPS chip in them, and work like any nav GPS or handheld GPS. The only thing they do different is they get some help speeding up the initial locking in on the GPS sats with some data from the cell towers.

Try a GPS speedometer with your phone in airplane mode to see the difference.

Well, I'll be damned. Learn something new every day!

 

[iamdub]

I also have the tire size answered.

Door says P265/70R16 (30.6" tall)

Tires are LT295/70R17 (33.25" tall)

That's an 8.8% difference in diameter. 50MPH on your speedometer is 54.4 actual MPH. 60 is really 65.3, 70 is 76.2, 80 is 87.1, 90 is 97.9...

Which now makes me wonder what these wheels came off of, since they are 17s, not the factory 16.

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Nice tires. I think those wheels are stockers from an '07ish 4WD Tahoe

 

[TURNz]

Thanks. Other than the body mount issue, I think I got a really good deal.

 

[TURNz]

The location of the OBD plug sucks. My dongle blocks most of the parking brake pedal. And I bumped it with my knee tonight and broke the housing

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