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MPR with new tires

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Old May 21, 2010 | 01:05 PM
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cdryanhall
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Default MPR with new tires
i have 285\70R17 with 321 gears when the speedometer is on 70 my i giong faster are slower than 70 and buy how much? thanks new to this
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Old May 21, 2010 | 01:07 PM
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opdsgt
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All anyone can do is offer educated guesses.

Borrow someone's GPS and find out for yourself, you will know exactly how fast you're going.
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Old May 21, 2010 | 01:48 PM
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cdryanhall
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i found a website that said about 4 to 5 MPR faster so we will see.
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Old May 30, 2010 | 01:49 PM
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i got my dads tomtom and it off about 7 mpr off i guess i need to get the superchip
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