Regearing - Ford Powerstroke Diesel Forum
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Old 12-30-2010, 10:56 PM

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At what point does it become required to regear for tires. I would like to run 35's on my rig and I am willing to accept the inevitable decrease in mileage and the increase in noise with the tread. Is 35 the magic number where its still okay on the gears or should I go to a numerically higher axle ratio? I have a 3L axle code on my door, its -15F here or I would go look for the axle tag but I would rather no freeze my bejeebers off.
Thanks for looking.

2005 CCSB Lariat, 4" MBRP with 5" tip, Volant Intake, 4x130W KC Daylighters on a Smittybuilt Bar
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Old 01-01-2011, 05:03 AM
Let's go B's!!!!


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I have 35"s and did not regear. The odo and speedo will be off though. If you have a buddy with AE he can recalibrate for tires up to 35"
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Old 01-01-2011, 05:55 AM
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Don't re-gear for 35's. I re geared for 37's with 4.10's and it was really unnecessary. 38's and higher I think unless you do a lot of towing. In the end you give up a little highway driveability for in town driving.
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