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Unread 04-02-2015, 09:48 AM   #1
xjowner10
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32s and 3.55 gears?

I've got an 01 l6 4.0 with a cold air intake. I'm in need of new tires and was wondering how much power I would lose if I run 32s with the stock 3.55 gears. I have an automatic if that makes any difference. I do a bit of off roading and mudding during the summer so would my power off road suffer? Also I'm not too worried about my gas mileage. Thanks

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Unread 04-02-2015, 10:46 AM   #2
sAe23
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I went to 33x10.50s and for ME, here in SoCal, it was annoying with 3.55 gears.
On flat roads it was ...ok... but on a road with any amount of incline, the engine started to bog and the transmission couldn't decide what gear to be in.
I upgraded to 4.56, and while it is better, I kinda wish I went to 4.88 or higher (but the cost would have been prohibitive).
HTH
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Unread 04-02-2015, 12:25 PM   #3
xjowner10
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Thanks! I might stick with 30s or possibly go to 31s
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Unread 04-02-2015, 03:34 PM   #4
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Unless you drive on the highway a lot or live in mountains its fine. It just feels like a stock 4 cyl and you throttle a little more uphill.

If you have an older XJ with the power/comfort switch for the trans it helps a lot.
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Unread 04-02-2015, 04:26 PM   #5
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i have 3.55s and 33x10.5s and only really ever noticed going uphill on the interstate, with about 800 pounds of junk and a tiure on the roof
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Unread 04-02-2015, 07:37 PM   #6
cruechief
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I run 32s with stock gears and automatic and doesn't bother me.
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Unread 04-02-2015, 10:27 PM   #7
S8NNG8
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We'll see how 3.55's do for 32's with a 5spd when I get my 8.25 installed. For those of you that think 3.55's suffer, try 3.07's.
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Unread 04-03-2015, 07:08 AM   #8
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If your gonna run 32's and 355 better make sure you have a trans cooler installed because you are running higher rpms and will heat up the tranny uphill. Been in that situation more than once.
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Unread 04-03-2015, 09:29 AM   #9
xjowner10
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What tires would you guys recommend? I've been looking at a couple like bfg and mud claw. Any other recommendations? This is my dd so nothing that's got horrible tread life
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Unread 04-03-2015, 09:33 AM   #10
Finallyajeep
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I have 32'' cooper STT's that I like alot, also have 3.55 gears with the auto trans. Like many have said, I don't mind it around town, but once you get on the highway where there are any hills it gets somewhat annoying. Usually I just manually shift into 3rd gear for hills on the highway to keep it from searching for a gear.
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Unread 04-03-2015, 12:49 PM   #11
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Quote:
Originally Posted by 98muddyjeep View Post
If your gonna run 32's and 355 better make sure you have a trans cooler installed because you are running higher rpms and will heat up the tranny uphill. Been in that situation more than once.
I have zero issues with it. Even steady uphill at 55 I only run about 2200 RPM. Normal driving isn't much over 1500. Though that's with the trans switched to Power. Comfort is a bit higher at higher speeds.

Quote:
Originally Posted by xjowner10 View Post
What tires would you guys recommend? I've been looking at a couple like bfg and mud claw. Any other recommendations? This is my dd so nothing that's got horrible tread life
Wrangler MT/Rs. Can't beat em off road, they're hard as hell to puncture due to the Kevlar, they have excellent road manners including in heavy rain and snow, and they wear pretty decent.
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Unread 04-03-2015, 12:58 PM   #12
VegasGT
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Had no issues at all with 32's and 3.55s. There's powerloss over say, 225's, but it stills pulled 32s just fine. Its a Jeep not a racecar.
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Unread 04-03-2015, 12:59 PM   #13
DunmerBoy
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Quote:
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Had no issues at all with 32's and 3.55s. There's powerloss over say, 225's, but it stills pulled 32s just fine. Its a Jeep not a racecar.
this is from a guy running 35s on 3.55s haha
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Unread 04-03-2015, 01:09 PM   #14
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Quote:
Originally Posted by VegasGT View Post
Its a Jeep not a racecar.
And I drive mine like one regardless. If it was bad I'd be the last person around here to tell someone otherwise.
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Unread 04-03-2015, 02:51 PM   #15
VegasGT
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Quote:
Originally Posted by DunmerBoy View Post
this is from a guy running 35s on 3.55s haha
Haha exactly. Granted I also have a daily, so its kind of a non issue 4 low has plenty of power and since I dont even have to hit pavement to wheel, Im not too concerned about gearing. If anything the extra wheelspeed is nice.

You mfer's need to own a 2.5 Jeep at some point in your life and see if you ever complain about 4.0 power on 3.55s again.
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