31's to 33's

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Nov 27, 2005 | 07:22 PM

RyanMiller

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Joined: Jul 2004

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From: Long island NY

31's to 33's

I have stock 31 inch by 8 inch tires, and i want to upgrade to 33 by 10-12's.. how bad would my Mpg realy suffer.. 302, 3.55 gears, no overdrive. 86 f250.

Nov 27, 2005 | 08:57 PM

Drover

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Joined: Dec 2004

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Ryan, I went to 285's(33x11) on my 86. I love em,took the rpm down a little at cruise,didn't effect take off much if any(I have 6.9 diesel) CHeck my gallery for pics. Also went with 16x8 wheels.

Dec 1, 2005 | 09:25 PM

natewoz

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Joined: Feb 2003

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From: MN

I have a '93 302, A4OD, 3.55. Went from 29" to 33." Mileage went from 15-16 stock to 12-13. I put a Diablo Delta chip in from the store here, and I gained a lot of my driveability back, now I normally get 13.5-15 running premium. The better half got 15.5 on a 120 mile pure highway trip over Thanksgiving.