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| 2004 to 2008 F-150 and Mark-LT 4.2L, 4.6L and 5.4L equipped F-150s and Mark-LTs. |
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#12
Tue, May 11th, 2010, 09:51 AM
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yeah....you might be overthinking.
 If your tires are bigger but the same weight and width you might see an improvement. But when you increase the tire size you increase the weight which has significant more draw on your mileage. I was just wondering what your rpms were because I'll be putting on some heavy 32/33 a/ts in a month or two probably.
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