Gearing and larger tires

[GPurcell01]

I have an appointment to get 4.10`s installed in 2 weeks and will report back. The gear set in parts is $1100.00 CDN. I want to move the leverage and be in boost more when going up long steep hills that are everywhere in my area. I hesitated pulling the trigger on them but they are AAM and it is the right way to do it. I will let everyone know on here if I regret doing it, if I think I should have done it sooner or if they grenade my axles first pull coming out of the shop.

Nice I'm glad to see this finally happening. Still looking forward to hearing those thoughts on it.

 

[GPurcell01]

My Aisin laughs at the mental diddling

Same here. Still lock it in 5th gear when towing just to make sure.

 

[ExtremeRich]

Not sure what you mean by "behave", but I don't have any negatives to report with that same combo. Of course I went to 37s before having a chance to drive around in stock form for too long. And with the 4.10s combined with the 8-speed I feel spoiled compared to my 4th gen with 3.73s and 6-speed.

Did you get aftermarket wheels for the 37”s and what lift did you use?? Pics?

 

[LateToTheParty]

Did you get aftermarket wheels for the 37”s and what lift did you use?? Pics?

Yeah, I wanted a little more sidewall than the stock 20s allow for, so went down to an 18x9 and went with a +12 offset to avoid the radius arms. I went with a bit of a Franken-lift combo with Thuren springs up front along with Synergy radius arm brackets and then BDS springs in the rear

 

[Speedracer93CobraR]

Yeah, I wanted a little more sidewall than the stock 20s allow for, so went down to an 18x9 and went with a +12 offset to avoid the radius arms. I went with a bit of a Franken-lift combo with Thuren springs up front along with Synergy radius arm brackets and then BDS springs in the rear View attachment 55703

How are those Trail Hog tires holding up for you?

 

[LateToTheParty]

How are those Trail Hog tires holding up for you?

They've been great so far. I have about 26k on them and depending on what we end up scheduling for summer trips, I'll likely be replacing them somewhere around 30k. As of right now, unless I see something else that would give me significantly more mileage or make a smaller hit to the wallet, I'll order them once again.

 

[oilnewby]

I was referring to the truck’s ability to take off a normal speed (faster than a school bus lol) and also cruise at highway speeds in 8th gear. It sounds like it will be no dramas if I go with 37s.
Good feedback - thanks!


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I have been exploring replacing the factory tires with 35s or 37s on my soon to be 2022 2500. I’m amazed at the lack of discussion on regearing for the HD trucks. Coming from a wrangler the regear is standard practice… but even the Mopar sanctioned Rocky lit/37” tire package did not mention regearing. Is it because the Cummins engine has so much torque to compensate for the tire size… or is everyone just accepting the lower level of power that taller tires introduce just to get the good looks? I like the big tires but also like the OEM power and torque. What is the scoop on regearing for 35s and

I have CTD with 35's and towing heavy sucks, especially in first gear. I can't imagine it with 37's. For those not towing heavy or not really towing at all 37's look great.

 

[BikePilot]

Fwiw I just put 37s on my truck (gears were scheduled before tires went on). It's a HO Cummins and is noticeably slower, though not terrible with the big tires and stock gears. It'll be re-geared in a few days though. The big tires look and ride great. I'm pretty sure they will be just fine towing heavy too (with the re-gear anyway).

 

[GPurcell01]

Fwiw I just put 37s on my truck (gears were scheduled before tires went on). It's a HO Cummins and is noticeably slower, though not terrible with the big tires and stock gears. It'll be re-geared in a few days though. The big tires look and ride great. I'm pretty sure they will be just fine towing heavy too (with the re-gear anyway).

What ratio are you going with and where are you getting the gears?

 

[BikePilot]

4.10 AAMs and a front ARB from the local 4x4 shop.