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Fitting 37" BFG Tires on a Stock Jeep Wrangler JKU - NO LIFT KIT!


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Published: 2 years ago
In this video you will see the struggles as I try to get a set of 37" BF Goodrich Mud Terrain KM2 tires to fit on a 2013 Jeep Wrangler Unlimited Rubicon or JKU.
The idea behind such an odd approach to upgrading an off road rig is to start at the foundation and work my way up. I want to keep the center of gravity on the vehicle as low as possible and the main focus of the build is to fit the awesome 37 inch BFG KM2's. Those have been my favorite tires for as long as I can remember and are one of the most "Go To" tires in the off road industry.
So, with a set of G2 1.5" spacers, I get the Jeep on jack stands, pull the old rims and tires off, have the 37's mounted up and commit to drive the Jeep at the end of the day!
The biggest problem happens at the rear of the vehicle. The rocker panel guard is too long and must be removed and modified before it can be reinstalled. Then the bottom of the body at the leading edge of the rear wheel well needs to be trimmed, sealed and spray painted. I show the basic steps I took to accomplish this task.
So the Jeep now sits on the 37" Mud Terrain tires but there is lots to do. The fenders will need to get modified for more clearance and the rear tire mount will have to be upgraded as well to handle the much larger tire.
It was a great one day project and I'm thrilled to have it done. Next up will be G2 gears and chromoly axle upgrades. Then fenders, rear bumper and some off roading of course!
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#Jeep #bfg #tires #wrangler #diy #howto


comment  Comments

is a 2 door jeep jk any different?

1 day ago

Less doors

8 hours ago

This is what you do when you want to keep your jeep from ever being able to really offroad, but "look" like you do.

3 days ago

True.

2 days ago

No offense but you’re a fucking dumbass....wait, ya please take offense to it

3 days ago

No offense taken.

2 days ago

speed bump wheel stuffer...jeeze..now i've seen it all

3 days ago

How is it holding up ??

5 days ago

Lol try that on a stock sahara

6 days ago

Bring it over, we’ll get it done!

6 days ago

What axle shaft brand did u go with?

1 week ago

G2

6 days ago

I am just curious about how adding these tires with the spacers effects the transmission and overall vehicle. I had read lots of pros and cons to the wheel spacers. I personally like the wider stance look and want to do it. I am currently on 33's and I want 35's when my tread goes and need to replace.

1 week ago

I have the terra grappler 33's as well. Lol I appreciate it you guys.

3 days ago

Joey Puntasecca I too am using spacers (for now) until the tread on the new 33” Nitto Terragrapler’s that my used Jeep came with are worn out. The difference with me is I did a fairly inexpensive Rough Country suspension lift first (springs and shocks) as to not ruin my fenders and still have the articulation for trails. The spacers make such a huge difference in widening your stance and of course looks more aggressive. Once I get new wheels and tires they’ll be on CL or eBay haha!

1 week ago

Get a good quality wheel spacer... Synergy, Spidertrax, G2... and install them correctly and you will be fine. To go 35" isn't that big of a deal but plan to re -gear... it's just the correct way. For 35 the ideal gear is 4.55 and to run 37" the ideal gear is 4.88

1 week ago

The spacers with a reasonable tire size (no rub) would have looked good until you can afford a legit lift.

1 week ago

Next time jason a screw driver jammed between the rotor and caliper will do as well

2 weeks ago

White letters are the best looking on the jeeps

2 weeks ago

Fun fact putting anti seize on studs cause over torque and you don't achieve the clamping force engineers spec for that stud so don't put anti seize on unless you wanna have a chance of your tires coming off as you drive down the road or the engineers that designed this vehicle spec for that other then that nice video

3 weeks ago

Yikes dude. I get all of what you are saying here and agree with the science behind dry and wet torque. In my experience, routine maintenance and anti-seize on lug nuts works fine but we can leave your information here for others to discern on what is best for them. Plus, I do this on all of my vehicles, not just Jeep... learned it from my grandfather who did it on all of his farm equipment to make maintenance less dramatic. Have a good one!

3 weeks ago

+AutoEdits search up wet torque vs dry torque and you'll find dry torque which is the spec the engineers give you for wheel studs unless they state to use a lubricant is higher than wet torque to achieve the same clamping force the bolt or stud in this case is rated via a grade which is the tensile strength this bolt can withstand before it breaks if you use a lubricant you will reach this breaking point much faster then if it is dry not to mention you don't get the same amount of stretch and you have a chance for the bolt to come loose now when I was in tech school training to become a mechanic we did a lab which proving that and if you ever work on cat engines you can see that some fasteners spec to have a wet torque using a lubricant that they spec out. now if what you say is true then why would we have to have a wet or dry torque also I only bring this up because they drilled this into everyone of us because when tires come off especially when you work on heavy trucks they tend to go through someone's windshield and usually results in someone getting killed and I don't mean to argue I really enjoy watching your videos and I wanna get a jeep myself and do some modifications like you have done and lots off people will watch your videos and say the same but most probably aren't mechanics by trade so they will look to you to show them how to do this and I don't know if you're a qualified mechanic so I can't say that you're telling people the wrong or right stuff because everyone one in the trade I work in will tell you something different but anyways love the videos and I don't mean to argue but safety is big on this stuff and I was told to always make sure everything I work on would be 100% nothing is gonna go wrong with when going down the road because your mother or girlfriend or wife ect could be in the car next to what you worked on

3 weeks ago

Thanks for checking out the video but what you are saying about anti seize on lug threads is NOT fact. The torque is rated at the shoulder of the lug against the wheel not the nut against the thread. The correct caution would be to recommend not getting any debris or anti seize in that area.

3 weeks ago

Does it flap at 80mph? When down.

4 weeks ago

Nope, goes down the highway at 80+ no problem.

4 weeks ago

Cool video!

4 weeks ago

Thanks!

4 weeks ago

@AutoEdits

Hey! So my local 4x4 shop just convinced me to forgo my initial decision to buy 37" Nitto tires, and go all in on the new 37" KM3's!

You gonna switch up?

1 month ago

Cringe worthy.

1 month ago

They look very cool lift kit and sorted 👍🇬🇧

1 month ago

Thought u had to change gears for 37s

1 month ago

I did. Installed 4.88:1 and like it very much.

1 month ago

pazzo, il frenafiletti no!

1 month ago

maybe we misunderstood, I talk about the threadlocker you put on the wheel spacer nuts ... put it there is like putting it directly on the wheel nuts and it can not do ... it's dangerous, you risk breaking the columns of the spindle, warming the threadlocker hardens, not to mention that the red one you used is already the one with strong fixing ... it's a tip that I give you that I'm a repairer, take it off immediately and use self-locking bolts if you do not trust, otherwise in a few years you will regret it bitterly ...

1 month ago

I just use an impact wrench and it works fine. Did it for 2 years on this vehicle.

1 month ago

+AutoEdits if you think you do not have to disassemble it any more, but if you had to disassemble it you could break the columns ... or in the worst case, round the dice ...

1 month ago

It worked out perfect.

1 month ago

How long did it take you to add the lift..... lol

1 month ago

That's just stupid. Have fun driving around the mall.

1 month ago

I will!

1 month ago

Has it been lifted yet

1 month ago

Yes, keep watching more videos in the jeep playlist!

1 month ago

The bigger tires have more air in them that's why they weigh heavier !!😂😂😂

1 month ago

I like that

2 months ago

I lifted my truck and bought the bigger tires all at the same time it looks better then being half done

2 months ago

What rim and size, also what type and size you have on your ram??

2 months ago

Stock rubicon wheels... 17x8. The truck wheels are TRBeadlocks Hardrock size 17x10 with a 4" backspace

2 months ago

Looks so stupid!! Idiot!

2 months ago

you are wrong

2 months ago

If you have to add spacers, take off the rocker panel and remove the fenders, isn't it technically not stock anymore?

2 months ago

You do the best job for a back yard custom builder, you take the time and patience to do it right :-)

2 months ago

I like seeing you using "LOCTITE THREAD LOCKER" So many don't and they check the outer lugs and never the inside. I'll be following you in the future.

2 months ago

good job.... will do really well on the highway...

2 months ago

And it did!

2 months ago

Would 35s have worked?

2 months ago

Easier for sure.

2 months ago

The biggest problem on putting TALL TIRES
on your Jeep it is going to kill your automatic transmission! Tall tires are going to kill your torque and kill your MPG. But if you have a stick transmission you can control the loss of torque by shifting through your gears to keep the RPM up on your engine!

2 months ago

I put the proper gears in the Jeep immediately following this change and it drives as good as can be.

2 months ago

hank goodness you didn't strap dow that top tyre when you transported them. think of what could have happened if you had to break hard

2 months ago

I literally drove down the block, it was fine.

2 months ago

That’s Definitely SCV

2 months ago

Yes it is.

2 months ago

I've never been able to get them to balance without falling down either...

2 months ago

LOL!

2 months ago

kinda putting the cart before the horse

2 months ago

100%

2 months ago

I'm glad you fit the tires. I hope there are no bumps where you go offroading.

3 months ago

Ok 37" but how wide? Can you let us know full tires hight and width. thanks

3 months ago

+AutoEdits the wheels are 17 by 7.5 correct? ive been told i cant put 12.5 wide tires on those

2 months ago

37x12.5 r17

3 months ago

Idiots

3 months ago

Hey Jason, I forget...What size lift did you go with in the end? I've watch so many videos I can't recall.

3 months ago

Thanks for the vid. Odd is good!

3 months ago

Why 37" and no lift?
Low center of gravity for real rock crawling. High fender front kit, trim rear. Golden.

3 months ago

Fun video. Can you speak to the differences in how it drove with the 37"s vs stock? I previously owned a 2010 4 door with 35's, and it drove horribly on the road. Probably had more to do with the 4" lift, but I'd like to hear how yours was with the stock suspension. Thanks

3 months ago

It drove great just like you see it here. If you watch a few more videos on this series you will see exactly but it was awesome.

3 months ago

I’m always thankful for everyone of your videos and that you actually do it as anyone else who isn’t rich would! Perfect man.

3 months ago

Thanks so much!

3 months ago

Ha! I was more worried about the flashy video camera tripod being taken out by a wagging tail ... Woof 😎

4 months ago

LOL! Thanks for the shout!

3 months ago

You probably could throw aftermarket fenders on and the tires would fit perfect

4 months ago

Hey, I did that next!

4 months ago

Paranormal activity...... The tyre just fell on ground by itself....

4 months ago

Yes it did!

4 months ago

Have you seen any problems with putting a large tire on stock rubicon rims? I have the same rims and want to put 35’s on, but have seen people say both yes and no. My biggest question is, can I put a 12.5wide tire on my 7.5 wide stock rims?

4 months ago

I ran the 37 x 12.5 r17 on my stock Rubicon wheels for over a year and they performed great.

4 months ago

You cut the body to fit tires just to lift i later and would most likley clear anyway. Remind me never to buy a vehicle from you

4 months ago

Even after the lift, I am still glad to have cut that part of the body. Need to do that to clear 37" tires and long travel suspension.

4 months ago