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Old 07-11-2013, 12:52 PM
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New jeep owner, need help with tires

Hey guys! So I got my first jeep ever yesterday! It's been a dream of mine to own one since I was a little girl. Now that I have one I can't wait to make it as big and mean as possible. I have a 2008 Sahara Unlimited. It came with factory tires but I want to put a 3' lift on it and big mud tires. I have no idea where to start.. any website resources or anything will be a huge help! I am from Edmonton in Canada if that helps at all. I don't even know what kind of brand of tire to look for or stay away from. Any help? Jeep tires 101?

Thanks!

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Old 07-11-2013, 12:55 PM   #2
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what size wheel are you gonna plan to run? 15,16,17,18?

is yours manual/auto?

what gearing do you have? 3.21, 3.73, or 4.10?

Since you have a 2008 model... you have the 3.8 engine. the gears will be the deciding factor. the 3.21 are not preferred for big heavy mud tires unless you have the 2012+ engine to help compensate. the 3.73 will help but the 4.10 will be sufficient.

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Old 07-11-2013, 02:39 PM   #3
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He's right. If you have the auto trans. you better shop for tires carefully because heavy tires will destroy any power, mileage, and braking ability that Jeep has. With the manual trans. the 3.8 can hold it's own enough to be driveable.

Are you going to get rough with this Jeep or do you just want the look? Spacer lifts are cheap and get the job done well for most people.
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Old 07-11-2013, 06:31 PM
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I have no idea what size to go with. What would fit better with a 3' lift?
I want it more for the looks but I would like to be able to get some mud on the tires also.
It's an automatic so I guess I have to look for lighter tires? Is there a certain brand?
How do I find out what gearing I have?
I'm such a rookie when it comes to jeeps but I'd love to learn what I can
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Old 07-11-2013, 06:42 PM   #5
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I love the goodyear duratracs i just bought but even in the small size i am running, 245/75/16 they are still pretty heavy. On my JK with 3.73's it is not a problem but i would be hesitant to run anything much bigger then stock on a JKU automatic with 3.21's unless you plan on changing the gear ratio, which is not cheap.
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Old 07-11-2013, 06:57 PM   #6
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no worries. You can check your build sheet. call jeep, give em your vin and ask for what gearing you have. you could also check underneath your jeep. your axle should have imprints on what gearing you have.

For our jeeps, the lighter the better. More rotational mass will equate to less mpg. 10lbs extra on wheels is equivelant to 100lbs. so weight and size go hand in hand into selection.

You can run 35's on your jeep and depending on your gearing, either you'll love it or hate it. gearing changes are about 1000-1500 depending on your location. the shorter gears (higher numbers) will be able to run a bigger tires. the taller gears (lower numbers) will have a hard time turning those big tires. It will turn, but its gonna be pretty sluggish.

For a 3' lift, you can do 33's or 35's. pick your poison. You can also do a 2.5 which will net you a higher than advertised lift.

Heres a write up on my lift...with my 285/70/17 tires (some consider them 33's but in reality theyre 32's)
https://www.wranglerforum.com/f33/rub...ew-254067.html
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Old 07-12-2013, 01:24 PM
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You're amazing. Thank you for all your help! Where do I get a build sheet from?
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Old 07-12-2013, 01:44 PM   #8
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Just helping another jeep member. I was in your shoes once too. call jeep, and ask them what gears are you running by providing them your vin number(vehicle identification number)

(either 3.21, or 3.73)

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