JK Teraflex Leveling Kit 285/75/17 BFG KO2 Spidertrax Spacers OEM Wheels - Jeep Wrangler Forum
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Old 03-31-2019, 08:33 AM
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JK Teraflex Leveling Kit 285/75/17 BFG KO2 Spidertrax Spacers OEM Wheels

Brand new to the forum, but have already learned a lot from the members here. Thanks to all of those posting advice, tips, and lessons learned. It greatly helped me to make a decision on how to initially modify my JK.

Unfortunately, I couldn't really find any one post or thread that summed up the exact formula of changes I was wanting to make. So I thought I would post my own experience with some specifics.

What I was trying to accomplish was a purpose built Jeep. That purpose was 90% daily driver, 10% beach machine. No major wheeling was in the plans at all here. I need the Jeep to get me to and from work, comfortably, and I needed the OEM components to last, and not be taxed to harshly.

After diligent research here on the forum, and elsewhere on the net, here's what I went with:
1) TeraFlex Leveling Kit (make room for bigger tires)
-Wanted to keep stock ride
2) BFG KO2 in 285/75/17
-Have had a ton experience with these tires on a YJ, TJ and 2 Landrovers
-Appreciate the decent performance upgrade, on road manners/noise, tread life
3) Spidertrax 1.5" spacers
-Necessary to keep running stock OEM wheels
-Wanted a slightly wider stance for stability

My impressions on the set up is that it's perfectly matched for what I'm trying to accomplish. For the 10%, I have enough clearance in the wells for the flex I'll be seeing over soft sand. The height will easily get me through, over and around ruts.

Now for the 90%, the handling is exactly what I expected. It's still low enough for jumping in and out in normal getting around town use, which makes the wife happy.

Overall, the set up puts the step rails about 3-3.5" higher than stock. Clearance in the wells improved by about 1.5", even with the larger tire.

There were some improvements needed after the fact. The larger tire (+/- 34") on the OEM wheel does not fit so well on the spare carrier. One good thing is that I didn't have to raise the 3rd brake light, because I hated all those options (without spending $1500 of course). But I had to purchase another 1.5" wheel spacer to get the spare from rubbing against the rear bumper. Not a big deal, and I just purchased a cheap set, no need to spend Spidertrax money for the spare mount. Found them on Amazon for about $40.

There was also a small amount of rub on the front plastic air dam at full lock only in reverse though. So that just needed a little trimming on both sides. I used a hacksaw blade, and a quick file to take off the rough edges. That's what I had sitting around and it was easy.

So, I hope this post helps anyone deciding how to do a modest set up to keep things on the cheap side, and still have some decent on road manners. The whole thing ran $2600 which included parts (bought from Amazon including Mopar locking lugs), 5 tires, all labor to install at a local shop, and an alignment.

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Old 03-31-2019, 09:21 AM   #2
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Nice looking Ride..
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Old 03-31-2019, 12:33 PM   #3
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Nice...

Keep an eye on the spare as the weight you've added to the stock carrier may be a bit more than it can take....

I was back and forth between those tires and the KO2's in 285/75R17 with a C rating and went with the smaller tire due to the weight. If I had went with the 285/75R17 I figured I was going to need an HD spare carrier..
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Old 03-31-2019, 01:19 PM   #4
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I also have the BFG KO2's in 285/75/17. 34" is a great size, enough to provide a nice boost in off-road handling without requiring too many modifications or negative impact to durability/reliability or on-road driveabilty. With a slight lift or leveling kit the 285/75/17 fills the wheel wells nicely and they also have a good height/width balance. I used aftermarket wheels with a 5" backspace because I don't like spacers, but spacers work OK if you want to save a grand on the wheels. I have no rubbing at all but then again I have an aftermarket bumper and no air dam. No problems with clearance at the front sway bar or LCA at full steering lock. I have an extended spare carrier (on stock tailgate, with stock rear bumper) and the 285/75/17 just barely fits, but fit it does.

When I looked at all the extra dollars to make a 35" work it just wasn't cost effective considering the small difference vs a 34". For some reason 34" doesn't seem to be a very common size but it really hits a price/performance sweet spot on the Wrangler.
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Old 04-01-2019, 02:00 AM   #5
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Is that the spacer leveling kit or coil spring? I am considering one of these kits too.
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Old 04-01-2019, 06:47 AM
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Originally Posted by Old Dogger View Post
[IMG class=inlineimg]https://www.wranglerforum.com/images/smilies/welcome.gif[/IMG] to the Forum..[IMG class=inlineimg]https://www.wranglerforum.com/../images/smilies/wavey.gif[/IMG]

Nice looking Ride..[IMG class=inlineimg]https://www.wranglerforum.com/../images/smilies/thumb.gif[/IMG]
Thanks! Pleased how that turned out as well.
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Old 04-01-2019, 06:51 AM
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Is that the spacer leveling kit or coil spring? I am considering one of these kits too.
It’s the spacer kit as I was really wanting to keep stock ride. Lots of conflicting info out there on whether the spring kit keeps the stock ride or stiffens it. Also labor cost was a factor in my case. Install on the spacer kit was considerably less.
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Old 04-02-2019, 01:24 AM   #8
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It’s the spacer kit as I was really wanting to keep stock ride. Lots of conflicting info out there on whether the spring kit keeps the stock ride or stiffens it. Also labor cost was a factor in my case. Install on the spacer kit was considerably less.
Thanks for the info. Your jeep looks great by the way!
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Old 04-02-2019, 07:12 AM
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Nice...

Keep an eye on the spare as the weight you've added to the stock carrier may be a bit more than it can take....

I was back and forth between those tires and the KO2's in 285/75R17 with a C rating and went with the smaller tire due to the weight. If I had went with the 285/75R17 I figured I was going to need an HD spare carrier..
Understood thanks. I'll let you know if I run into problems and will keep an eye out for cracking or stress.
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Old 04-02-2019, 07:41 AM   #10
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#smiller1 do you have any pics?
#haverhill1 your Jeep looks good.
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Old 05-07-2019, 09:59 PM   #11
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haverhill1: Aren't those JL wheels with a different backspace than JK OEMs?

I'm looking to run BFG KO2s in 285/75R17 on a JKU with stock wheels, 1.5" spacers and TF 1.5" leveling kit.

Any thoughts?
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Old 05-08-2019, 08:11 AM
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haverhill1: Aren't those JL wheels with a different backspace than JK OEMs?

I'm looking to run BFG KO2s in 285/75R17 on a JKU with stock wheels, 1.5" spacers and TF 1.5" leveling kit.

Any thoughts?
These are stock JK’s specced for the chief edition which is essentially a Sahara. Stock backspace is 4.5 so the spacers bring that to 6 which is what you need or you’ll be rubbing pretty bad I imagine. You’ll be pretty happy with the setup. Don’t forget to get an extra pair of spacers (cheap ones) for the spare tire. One thing I will say that is a disappointment is the drop in performance. She’s pretty slow and throttle response/shift points are jacked up. Haven’t checked mileage because I don’t care about that, but I’m sure it’s suffering too. I guess I need to get calibrated. Anyone have advice on that? Is there a good thread on that subject?
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Old 05-13-2019, 09:15 AM   #13
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Thanks! Your Jeep looks great!
I have 3.73 gears, so I'm hoping to keep most of my performance. I think my aftermarket bumper will just clear the 285/75s, but we'll see.
I am happy with my AEV Procal. Very simple to use, and corrects the shift points and speedometer/odometer perfectly. You can also change the TPMS warning settings, if you choose to run a lower PSI. I'll be going from a C load to an E load tire, so I expect to be running much lower PSI on the highway.
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Old 05-13-2019, 11:06 AM   #14
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Looks Great!

Gawd I wish I could talk my Wife into Florida (woke up to rain and 34* this morning) Tired of Pa weather.
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Old 05-28-2019, 06:17 PM   #15
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Haverhill1 … that is the exact same things I want to do to my Jeep. I retired February and my wife and kids bought me a 2015 Jeep Wrangler Sahara Unlimited as a retirement gift. Was wondering if geo brackets were necessary with the Teraflex lift?
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Old 05-28-2019, 08:18 PM   #16
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Haverhill1 … that is the exact same things I want to do to my Jeep. I retired February and my wife and kids bought me a 2015 Jeep Wrangler Sahara Unlimited as a retirement gift. Was wondering if geo brackets were necessary with the Teraflex lift?
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Old 06-02-2019, 01:22 PM   #17
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how long did the spacer kit take to install?
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Old 06-04-2019, 08:01 AM
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Haverhill1 … that is the exact same things I want to do to my Jeep. I retired February and my wife and kids bought me a 2015 Jeep Wrangler Sahara Unlimited as a retirement gift. Was wondering if geo brackets were necessary with the Teraflex lift?
Not sure what geo brackets are. Everything needed came with the kit. Congrats on the retirement and the jeep. Nice gift! Next on the never ending upgrade list is the sunrider top for hard top!
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Old 06-04-2019, 08:05 AM
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how long did the spacer kit take to install?
Not sure how long it would take to do in a garage or driveway with hand tools. I had my local mechanic do it for me in a shop with lifts etc. They charged me 4 hours labor for the lift install, install 5 tires, oil change. Worth every penny in my estimation. There are tons of videos on you tube with installs taking anywhere from 4 hours to 8. Good luck with it!
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Old 06-04-2019, 08:08 AM
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Looks Great!

Gawd I wish I could talk my Wife into Florida (woke up to rain and 34* this morning) Tired of Pa weather.
Now’s not the time to convince anyone to move to Florida...lol. Work on her in February when it’s 70 and sunny here. When you’re sick of those dreary PA clouds you aren’t thinking about the 90 degrees it is here all summer!
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Old 06-04-2019, 04:09 PM   #21
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Looks good. I did a similar thing with my '09 but went with the q-tech leveling kit (1.75-.75) and Nitto RG's 275-75-17, and on her '15 we did the teraflex kit with General x3's on Sahara rims 295-70-18. 1.5" wheel spacers on both.
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Old 06-04-2019, 05:14 PM   #22
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Looks good. I just replaced my 315/70 Duratracs with 285/75 KO2s on my Pintlers. I was concerned that going down in tire size would look odd, but it was unfounded. I measured the Duratracs before they were removed and they were 33.25" (probably 33.5" when new). The KO2s in this size are a true 33" and honestly look the same from the side. Still getting used to the thinner tread width, but the relative absence of road noise has my better half very happy, which is a huge win!
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Old 08-29-2019, 06:54 PM   #23
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I have the 275/70/18, Mammoth leveling kit, and wheel spacers as well.
Looks good to me!




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