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Old 01-01-2013, 05:18 PM   #1
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Lift/Tires/Wheels

Hi Guys,

So i've got a 2012 Sahara and i'm wanting to get either a leveling kit from teraflex or the 2.5" Teraflex Lift but i'm on the edge of which to get. I'm Wanting one so i can possibly run some 33" Duratracs. Would the 2.5" lift be a good lift for my jeep?

Which leads me to the next question. I'm torn upon what wheel tire size combo would be good. I've been thinking i want 17" wheels but i've got no idea of the sizes backspacing. I've tried searching and do not even know where to start. some wheels have the backspacing listed as others do not. for example i was looking at discount tires and i found these Wheel Details - Discount Tire Direct but i'm not even sure if they will fit 285 duratracs.

Any help would be good. Thanks Guys.

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Old 01-01-2013, 05:34 PM   #2
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Had 285/70/17s Terra Grapplers on MB Vdrive wheels with 2'' of backspacing, ran these w/o a lift for a few months. Recently Changed to 305/70/16s on ProComp 7069's and love em. I do have a 2.5 Teraflex lift.
Got everything from my local Discount Tire. If they don't have the style or brand you like, find it on line and they will match the price and order it from their venders.

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Old 01-01-2013, 05:37 PM   #3
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I ran 33x12.5x15s on my 2010 Sahara for a while before getting my RK 2.5 coil lift with no problems at all BUT I didn't go off road and certainly didn't use the front disconnects. I will now though.

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Old 01-01-2013, 05:47 PM   #4
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i've been reading i need 4.5 backspacing on a wheel to run a 33" tire. Is that correct? also whats the difference in 33x12.5x15 and 305/70/16. obviously i know the wheel size. theres so many formats of tire sizes. it blows my mind.
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Old 01-01-2013, 05:52 PM   #5
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so what do you think of the 2.5" teraflex lift damndirtydog? does the ride quality change any? did you get the one with or without shocks?
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Old 01-01-2013, 07:31 PM   #6
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Originally Posted by apresas View Post
so what do you think of the 2.5" teraflex lift damndirtydog? does the ride quality change any? did you get the one with or without shocks?
I have 2'' superlift spacers rear and Teraflex 2.5'' spacers in the front with extended bumpstops. I opted not to do the coil lift for 2 reasons, I wanted to maintain factory quality ride as much as possible because this is also my daily driver. The terrain here in Florida and Georgia...there's really no need for coils, spacers have worked well. Rock crawling would probably warrant coils.
I did change to Skyjacker Hydro 7000 for 2''-4'' lifts and I like the ride on and offroad. I didn't want the stiff ride of gas shocks, and these have served me fine.
It's all about what you'll be wheeling in. I don't believe in going overboard and dropping massive amounts of money on parts that are overkill for the type of topography that is in my region. Now when I move full time to Uath this summer I may switch to coils and better shocks because of the more rugged terrain.
Good luck. keep researching here on the forum and look at what people are running in your area.
P.S. READE looks like you got a good 3+ on that RK lift. A nice new heavy bumper and winch should take care some of that.
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Old 01-01-2013, 08:50 PM   #7
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I have the Teraflex 2.5" lift and I love it. It's a little stiffer ride but the off roading is much improved. I am running 4.5" back spacing and Duratrac 33" tires. Awsome setup.
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Old 01-01-2013, 08:54 PM   #8
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Quote:
Originally Posted by apresas View Post
i've been reading i need 4.5 backspacing on a wheel to run a 33" tire. Is that correct? also whats the difference in 33x12.5x15 and 305/70/16. obviously i know the wheel size. theres so many formats of tire sizes. it blows my mind.
If both tires are duratracs then:
33x12.5R15 = 32.5" at 49lbs each
305/70/16 = 33.1" at 62lbs

tirerack.com is a great sight to get spec info on tires. You can view tire weights, size, and much more on there. Just click on any interested in and see. If you have a specific question you can't find an answer too, ask away.
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Old 01-01-2013, 09:03 PM   #9
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Quote:
Originally Posted by jsmithtx View Post
I have the Teraflex 2.5" lift and I love it. It's a little stiffer ride but the off roading is much improved. I am running 4.5" back spacing and Duratrac 33" tires. Awsome setup.
Just sayin, I have the RK 2.5 with Bilstien 9100s and it's as good or better than the stock ride. To me anyway.
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Old 01-01-2013, 09:04 PM   #10
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Quote:
Originally Posted by apresas View Post
i've been reading i need 4.5 backspacing on a wheel to run a 33" tire. Is that correct? also whats the difference in 33x12.5x15 and 305/70/16. obviously i know the wheel size. theres so many formats of tire sizes. it blows my mind.
You can go up to 315 on a 5.2" backspacing and a 2.5" lift... as that is what the AEV-spec wheels are, and you can go right up to 37's with that combo. The factory wheels are 6.5", and many aftermarket wheels are 4.5".

You don't need 4.5 backspacing to run most 33's... unless you are getting some really wide ones. You don't actually need a lift either.

For the tires... the '305' in the above is the width in millimetres, which converts to approx 12 inches. The '70' means the sidewall is 70% the height of the tread width... so .70 x 305 = 213mm or 8.4 inches. On a 17 inch wheel, you end up with 17 + 8.4 +8.4 to get 33.8 tire height.

Now, this assumes the manufacturer's specs are accurate...and they often are not close at all. Lots of 33" tires come in at 32" mounted. My Duratrac "35s" are more like 34 and a bit.

For wheels... ideally you want to find a Wrangler-specific hub... these are called 'Hub-centric' and fit like a factory wheel. Others that have larger hub holes are called 'lug-centric' and use your studs to align. You are less likely likely to run into balance issues or busting a wheel if you have hub-centric wheels.

AEV makes only a few styles, but the advantage is they are Wrangler-spec, have 5.2" backspacing and will work with lots of tires. There are 100's of wheels that will work...

If 33's are all you want... just get some nice wheels to widen it out a bit and you are all set.
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Old 01-01-2013, 09:16 PM   #11
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Quote:
Originally Posted by damndirtydog View Post
I have 2'' superlift spacers rear and Teraflex 2.5'' spacers in the front with extended bumpstops. I opted not to do the coil lift for 2 reasons, I wanted to maintain factory quality ride as much as possible because this is also my daily driver. The terrain here in Florida and Georgia...there's really no need for coils, spacers have worked well. Rock crawling would probably warrant coils.
I did change to Skyjacker Hydro 7000 for 2''-4'' lifts and I like the ride on and offroad. I didn't want the stiff ride of gas shocks, and these have served me fine.
It's all about what you'll be wheeling in. I don't believe in going overboard and dropping massive amounts of money on parts that are overkill for the type of topography that is in my region. Now when I move full time to Uath this summer I may switch to coils and better shocks because of the more rugged terrain.
Good luck. keep researching here on the forum and look at what people are running in your area.
P.S. READE looks like you got a good 3+ on that RK lift. A nice new heavy bumper and winch should take care some of that.

As the one in my avatar? Just got that thing installed.
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Old 01-02-2013, 06:34 PM   #12
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Sweet. looks great with the new bumper and warn winch. I only lost about 1/2 inch with my XHD and and XRC8 winch.
I'm thinking about taking off the extended end caps. RR makes a tapered stubby end cap that looks way better than the flat ones. Contemplating changing to those.

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