Tire and Wheel size upgrade? - Ford Powerstroke Diesel Forum
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post #1 of 2 Old 03-03-2008, 10:29 AM Thread Starter
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Tire and Wheel size upgrade?

It's time for new skins (265/70-17's) on the 350. My local Ford dealer has some brand new 275/70-18"s on 18" 2007 spoke alloys that came off of one of their new F250 conversion trucks for a little over what I'd have to pay for just a set of replacement tires. My question is what does going up a tire and wheel size do to the truck's brain and speedo? I have a programmable tuner. I figure this is probably a no-brainer but I wanted to be sure from "truck authority" forum before dropping $$$. Thanks

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2000 F350 Lariat
7.3 Liter, Auto, 3.73LS
112k mi. - 5th Wheel Camper Hauler / Occasional Grocery Getter and Church Bus

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post #2 of 2 Old 03-03-2008, 10:35 AM
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u might have to re cal it. ur superchip should be able to do that for ya


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