Gear Ratios / Tires - No Procal

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DirtyOffroad
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Gear Ratios / Tires - No Procal

Post by DirtyOffroad » Tue Jan 09, 2018 2:02 pm

So I ordered a 2018 and will be doing 37s on her. Currently AEV/Diablo/etc cannot program a 2018 to fix the shift points. Assuming I didn't want to wait for them to (maybe) figure it out, If i gear swap to 4.56 gears, that should work out to roughly the same shift points right?

33/4.1 = 8.05
37/4.56 = 8.11

That's a 0.08% difference in overall gear reduction which is negligible as far as I can tell.
2018 Ram 2500 Powerwagon
1.5 Thuren - Front
Thuren Rear Track Bar
LED Headlights and Fog
37x12.5x17 Toyo Open Country M/T

Merrick Dodge/Chryler/Jeep Salesman - Long Island, New York.

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olyelr
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Re: Gear Ratios / Tires - No Procal

Post by olyelr » Thu Jan 11, 2018 9:28 pm

Yes... but what that calculation does not factor in is the added rolling mass and resistance of the larger tires.

There is no way I would spend the money to regear to 4.56's. Hell, I want 4.56's with the stock tires.

You dont have to take my word for it, but I would suggest going to at least 4.88's if you are swapping right to 37's.
2016 Ram Power Wagon Laramie - Granite Crystal Metallic - Ramboxes :patriot:

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DamageWagon
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Re: Gear Ratios / Tires - No Procal

Post by DamageWagon » Fri Jan 12, 2018 12:11 am

You can run the 37’s first and determine how your driving style meshes with those tires. 4.88 would probably be a minimum (and the standard) if you’re going to regear. Or 5.13’s.

DirtyOffroad
Posts: 41
Joined: Mon Dec 04, 2017 12:46 pm
Model Year: 2014

Re: Gear Ratios / Tires - No Procal

Post by DirtyOffroad » Fri Jan 12, 2018 12:21 pm

4.88s would be my choice too but I'm also looking for drivability so without a procal, that was my major goal. I'll see how she rides with the 37s and a stock gearset. If its bearable I'll likely wait for a tune to come out
2018 Ram 2500 Powerwagon
1.5 Thuren - Front
Thuren Rear Track Bar
LED Headlights and Fog
37x12.5x17 Toyo Open Country M/T

Merrick Dodge/Chryler/Jeep Salesman - Long Island, New York.

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