tires and gears questions help

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11-07-2012 | 11:39 PM

#31

powrsurg

JK Freak

Joined: Feb 2012

Posts: 988

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From: Middle Island, NY

Quote:

Originally Posted by JKJeeper88

I do, and even they say that its 3.6L with 35s and 4.88s are sluggish and wish they'd gone with 5.13s!

Then their Other car is a Ferrari. There is absolutely nothing sluggish about a 3.8 with 4:88 or a 2012 with 4:56. My last 3 cars were an fx35, g37, and a 350z. I picked up the jeep after those. 35's with 4:10 yes that is sluggish but not with 456. I'm sorry but I really have to disagree with you here.

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11-08-2012 | 12:24 AM

#32

JKJeeper88

Thread Starter

JK Newbie

Joined: Mar 2012

Posts: 85

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From: Madison, Wisconsin

35s with a 3.6L on 3.21 gears...no.

Im running 32x10.50 tires on 3.21 gear ratio with the 2012 3.6L. Its sluggish as shit. 4hi in a field second gear pedal to the floor barely moving. Pass on 35s without regearing.

35s and 3.21....any mud, water,hill etc Im screwed I think that unless people have driven the 3.6l they can't comment on what it could run. Lol

Im not dropping 3k on something Im not sure about. But by going with 5.13 i know ill have the torque and crawl rate. If i wanted to go to 37s or 40s after...i have the gearing and locker for it already

Last edited by JKJeeper88; 11-08-2012 at 12:27 AM.

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11-08-2012 | 08:53 AM

#33

powrsurg

JK Freak

Joined: Feb 2012

Posts: 988

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From: Middle Island, NY

Quote:

Originally Posted by Johny1986

Yes, you can run 35's. You have 3.6L motor. You don't even need to regear it that low, or regear it at all.

I agree completely especially if you have a rubicon with factory 4:10's. if you have 3:73's going to 35's will reduce you close to 3:21. Is 3:21 suitable? For highway driving yea but not for hardcore offroad.

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11-08-2012 | 09:49 AM

#34

JKJeeper88

Thread Starter

JK Newbie

Joined: Mar 2012

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From: Madison, Wisconsin

Quote:

Originally Posted by powrsurg

Hence wanting to regard. Yeah its my daily driving and i know that with 35s and my current transmission and t case ratios i would run at about 2300-2500 rpm at 65-70 mph (can't remember exacts off the top of my head.)

I was told and shown that 4.88 and 35s wohkd put me closer to what Im at nk with 3.21 and 32s

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11-15-2012 | 07:47 PM

#35

logicfix

JK Newbie

Joined: Apr 2012

Posts: 15

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From: Greenwood, MS

Quote:

Originally Posted by powrsurg

What was your MPG like with 35's and 4:10 vs the stock Rubicon BFG MTs? I'm assuming that this was also a 2012?

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11-15-2012 | 08:46 PM

#36

Matthewd5

JK Junkie

Joined: Jan 2012

Posts: 2,828

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From: Auburn Maine

Quote:

Originally Posted by VolsJeep

I'm in the same boat. I want to get my 35's so bad!!! But I was worried about regearing. I have the 3.21 gears and the 3.6 Pentastar, but a 6 spd manual. I knew the tires would decrease my MPG, and for that i will regear in the future when I have the funds and plan to hit the trails more often.

i too have the 2012 with 3.21 and 6 speed, i only have 285/70/17's but i've been wondering if regearing was needed and today i was able to easily take off in second gear so i think that means i'm o.k.

if i replace for adding lockers i'd probably try 4.10's

matthew

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11-16-2012 | 03:19 PM

#37

cherryred12

JK Newbie

Joined: May 2012

Posts: 18

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From: Irvine,ca

Quote:

Originally Posted by Matthewd5

FYI: I recenlty put ARB lockers and 456s in my JKsport 2012 with 33's(285/75/16), automatic.

1. I am doing about 2800 RPM's at 70MPH, little high but OK.
2. I loveeeee the lower end torque while wheeling offroad.
3. I plan to upgrade to 35's on the next tire change and think that will be the perfext sweet spot for those gears.

John

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