Tire size vs. Gearing? - Ranger-Forums - The Ultimate Ford Ranger Resource


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Old 06-05-2014
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Tire size vs. Gearing?

So i'm in the beginning phases of planning out lifting my truck and I'm thinking about switching to a larger tire as well. right now I have 285/75/R16 Duratracs.
I have 4.0L Auto 4x4 with 4.10 gearing right now. I would like to go up to 315/75/R16 Duratrac's. Would this be okay with the stock gearing or should I think about going up to 4.56's?
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Old 06-05-2014
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the 315/75/16 is pretty much a 35x12.5 so you'd want to go with 4.88's not 4.56's.

I'd definitely regear both axles. It'll be incredibly sluggish without the regear
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Old 06-06-2014
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Quote:
Originally Posted by 99offroadrngr View Post
the 315/75/16 is pretty much a 35x12.5 so you'd want to go with 4.88's not 4.56's.

I'd definitely regear both axles. It'll be incredibly sluggish without the regear
What this guy said!
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Old 06-07-2014
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x3. You'll defiantly want to regear to 4.88s. You will regret it if you don't. Your engine and transmission will appreciate it as well.
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