Guy's running 37" tires? - Ford Powerstroke Diesel Forum
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Old 10-18-2013, 07:09 PM

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Guy's running 37" tires?

Just wondering how much 37" tires effect your overall gear ratio specifically 3.54 gears, do you find it becomes sluggish in 6th gear? does it hunt for gears from 5th to 6th much? top cruising speed to high?
I'm running 35"s right now but like the look of 37's, just don't want to give up the nice driveability of this truck.
Any comments from those with them would be appreciated.

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Old 10-18-2013, 07:27 PM
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Well, the guy (chaos?) with 40's and 3.55's says the truck still runs/drives great. I have only heard of a couple guys with 3.31's complain.
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Old 10-19-2013, 03:14 PM
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I have had 3 sets of 37's in my 6.7 with 3.55 gears and it is great. I had 35s and my truck likes the 37s better for final drive ratio for highway cruising. I wish I had 3.31 gears. I tow trailers a lot for work and then drive a lot empty as well and like the way it drives. It is never hunting for gears

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