Grenadier Regearing after tire upgrades

[Kalthunayan]

Has anyone re-geared the transmission after increasing tire size? I have upgraded my tires from 265 to 285 and i was wondering if i should re-gear or not.

 

[Zimm]

I don’t like the 3-2 clunk either but I also don’t know if it’s the gearbox or t-case.

I spent the last 2 days putting it in manual when I needed to stop, at any speed, and letting the tcu(?) force a downshift. It only happened once. if it was the tcase, it would be purely mechanical in nature and I would think whole lot easier for me to replicate. You're right though, in the sense I'm not keen of wasting thousands on an experiment only to get no results because I was in the wrong location the entire time.

 

[Zimm]

Oh, The transmission was reset, and it still does it. It's not a result of learning.

 

[Commodore]

Has anyone re-geared the transmission after increasing tire size? I have upgraded my tires from 265 to 285 and i was wondering if i should re-gear or not.

You would want to regear the axles not the transmission. Not sure if there is an option for different ring and pinion gears.

 

[LeeroyJ]

Has anyone re-geared the transmission after increasing tire size? I have upgraded my tires from 265 to 285 and i was wondering if i should re-gear or not.

I assume you mean you went from 265/70/17 to 285/70/17 ? If that's what you did, that's only a ~3.5% difference in circumference, so the impact to the drivetrain should be minimal and doing a re-gearing for that would be unnecessary imho.

I personally wouldn't consider a re-gearing until 37" or taller tires, unless you do rock-crawling or a lot of heavy towing.

Tire Size Calculator

Free calculator to find the dimensions of a tire based on its code. It also helps in choosing alternative tire sizes based on rim size or comparing two tires.

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