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Old 03-30-2010, 11:50 AM   #1
Join Date: Mar 2010
Location: League City (Houston) TX
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35's and speedo reading??

Anyone have know how many mph's I am off with 35's?? Sorry if this has already been covered....new here..and couldn't find anything in the search function.

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Old 03-30-2010, 12:03 PM   #2
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Welcome to the Forum! You can go hereTire Size Calculator - tire & wheel plus sizing and it will calculate that for you.

2010 JK Sport S Pkg.
Black, Hardtop
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Old 03-30-2010, 01:31 PM   #3
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Im about 5 mph off.
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Old 03-30-2010, 01:56 PM   #4
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thanks guys!
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Old 03-30-2010, 02:10 PM   #5
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I was told by my local Chrysler dealer that they can reprogram the on board computer to compensate for tire sizes. I have an add on box that compensates for my larger tires, but I didn't know of the dealer ability to reprogram at the time. If it's under warranty like the newer Jeeps, you can ask. Maybe they'll do it for free.
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Old 03-30-2010, 02:18 PM   #6
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A GPS will give you a very accurate speed reading. Iphone's have an app for "Heads-up display" that works great.
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Old 03-30-2010, 02:25 PM   #7
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^PTaylor, they lied to you. They can't do anything more than stock sizes and one or two uncommon non-stock sizes (edit- the European tire sizes, I'm told). They can't do 285/70/17, for instance, 265/75/17, 33", or 35" I know for a fact- Mark W.

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