35" and 37" JL pics with lift kit

Foster_WV

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I have the Mopar tailgate hinge kit and it works great. I think it puts upward pressure on the tailgate to compensate for the heavier tire because when I remove the tire and close the tailgate it doesn’t shut right. When I put the tire back on it shuts perfect.

I had the hinge kit painted to match the body to keep the factory look.

D5B64B9D-B724-4D00-BB53-E3854F2277A2.jpeg
That looks good, we just moved up to 315s and owning a TJ I’m concerned w the tailgate eventually sagging. And was about ask how does it help it keeps the factory hinges????



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ChattVol

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I have the Mopar tailgate hinge kit and it works great. I think it puts upward pressure on the tailgate to compensate for the heavier tire because when I remove the tire and close the tailgate it doesn’t shut right. When I put the tire back on it shuts perfect.

I had the hinge kit painted to match the body to keep the factory look.

D5B64B9D-B724-4D00-BB53-E3854F2277A2.jpeg
Looks good painted. The effectiveness of the mopar kit seems to depend on where the tailgate weakness lies. Looking at the design(I'm not an engineer), it looks like it beefs up the strength of the 2 lateral plates/beams going from the hinges to the tire carrier and doesn't address the hinges directly. In theory, it could/should strengthen the back wall of the tailgate and more evenly distribute the load on both hinges allowing the hinges to hold a little more weight. This assumes the weight isn't distributed evenly in stock form and the stock hinges aren't the critical components like they have been with previous models.
 
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ChattVol

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That looks good, we just moved up to 315s and owning a TJ I’m concerned w the tailgate eventually sagging. And was about ask how does it help it keeps the factory hinges????
For $550, the mopar kit doesn't strengthen the hinges and that's alot of $ to not address the hinges. I see that most people running 37s and larger are buying aftermarket bumper/tire carrier combo or something like the Ace/Rugged Ridge actual hinge upgrade kit rated for 40" tires for about the same price as the mopar kit.

As a data point, I've been running a 315/70/17 ko2 with aftermarket wheel(92 lbs total) for almost a year on the stock carrier and have bounced the jeep around offroad and it's held up fine.
 

OnlyOne

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For $550, the mopar kit doesn't strengthen the hinges and that's alot of $ to not address the hinges. I see that most people running 37s and larger are buying aftermarket bumper/tire carrier combo or something like the Ace/Rugged Ridge actual hinge upgrade kit rated for 40" tires for about the same price as the mopar kit.

As a data point, I've been running a 315/70/17 ko2 with aftermarket wheel(92 lbs total) for almost a year on the stock carrier and have bounced the jeep around offroad and it's held up fine.
The hinges are just fine with an aftermarket tire/wheel combo. I’m with you, I won’t spend that much on something that the RC plate will do. I wasn’t going to run anything with mine, but I figured for $60 why not.

267DC06E-5F5C-4D8F-BCF6-F27E4C9B6B10.jpeg


6B63C7A1-8573-40E2-82A8-6FCCDFD8EE28.jpeg
 

Foster_WV

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The hinges are just fine with an aftermarket tire/wheel combo. I’m with you, I won’t spend that much on something that the RC plate will do. I wasn’t going to run anything with mine, but I figured for $60 why not.

267DC06E-5F5C-4D8F-BCF6-F27E4C9B6B10.jpeg


6B63C7A1-8573-40E2-82A8-6FCCDFD8EE28.jpeg
That works, prob went that route but didn’t know it was out there. Went w this so spare didn’t hit bumper.

EAG Spare Tire Relocation Bracket Compatible with 2018-2019 Jeep Wrangler JL https://www.amazon.com/dp/B07FQMMW64/ref=cm_sw_r_sms_c_api_i_dzCTDbBBYZ8RW
 

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FLECK-5

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Looks good painted. The effectiveness of the mopar kit seems to depend on where the tailgate weakness lies. Looking at the design(I'm not an engineer), it looks like it beefs up the strength of the 2 lateral plates/beams going from the hinges to the tire carrier and doesn't address the hinges directly. In theory, it could/should strengthen the back wall of the tailgate and more evenly distribute the load on both hinges allowing the hinges to hold a little more weight. This assumes the weight isn't distributed evenly in stock form and the stock hinges aren't the critical components like they have been with previous models.
I am sure that the engineers at Jeep know exactly where the weakness of the tailgate is and apparently it isn’t the hinges. Keep in mind that the rear tailgate has a max capacity of 85 lbs and the factory tire is around 55 - 65lbs so when you upgrade to a 37” tire like I have (which is around 100lbs.), you are only over the stock carrier capacity by 15lbs. You don’t need to reinforce the hinges for such a small incremental increase over the capacity. If you’re running some crazy tires like 40’s, then that’s an entirely different scenario.
 

ChattVol

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I am sure that the engineers at Jeep know exactly where the weakness of the tailgate is and apparently it isn’t the hinges. Keep in mind that the rear tailgate has a max capacity of 85 lbs and the factory tire is around 55 - 65lbs so when you upgrade to a 37” tire like I have (which is around 100lbs.), you are only over the stock carrier capacity by 15lbs. You don’t need to reinforce the hinges for such a small incremental increase over the capacity. If you’re running some crazy tires like 40’s, then that’s an entirely different scenario.
Are you talking about the same jeep engineering group that designed the JL's subpar electric steering box, located the diff drain plug at the low point of the diff or allowed the hardtop gutter to pour water into the jeep? I could give additional examples...point being, jeep's engineering decisions aren't always sound.
 

Billet_JLU

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All we need is someone with CAD/FEA to get a value on the strength of the hinges. Other than jeep engineers already having this information I’m sure many aftermarket companies designing carriers have similar information.
 

Billet_JLU

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I am sure that the engineers at Jeep know exactly where the weakness of the tailgate is and apparently it isn’t the hinges. Keep in mind that the rear tailgate has a max capacity of 85 lbs and the factory tire is around 55 - 65lbs so when you upgrade to a 37” tire like I have (which is around 100lbs.), you are only over the stock carrier capacity by 15lbs. You don’t need to reinforce the hinges for such a small incremental increase over the capacity. If you’re running some crazy tires like 40’s, then that’s an entirely different scenario.
I agree that they know a strength number. They couldn’t design a new tailgate and design it the way it is without reasoning. And the capacity of 85lbs. doesn’t come out of nowhere, that’s calculated. Also designed with a factor of safety so technically, while not recommended, you can exceed the 85lbs. weight at your own discretion.
 

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20190927_122553c.jpg

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how's the ride compared to stock with your setup? I was even going with those tires too.
 

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1st 33 KOS no lift stock wheels

2nd 35 KOS Stock wheels

3rd 37 12.5 20 Nitto Ridge Grapplers KMC XD Hoss 2 wheels custom red letters
2 inch BDS lift

4th same tire wheels as 2 but upgraded to
3.5 Tera flex ST lift with 3.3 adjustable falcons (ride is awesome)

Coming next week Nitto 38 13.5 20
Danna 44 4.88 regear
And this projects done lol!! Only had the Jeep since mid June
HDX step rails
Smitty Built x20 10000 lbs winch
Magnaflow exhaust

Everything I changed I was able to sell
Thank God!!!

What is your opinion going from 35's to the 37's as far as handing/ride quality?
 











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