New Jeep Owner

[Andyyy]

Hello all! I recently purchased a 2018 JL Sport S Unlimited(2.0t). This is my first jeep and I just wanted some input on the parts list that I would need to run 35" tires with no issues on or off the trail. I am not sure If I need anything else besides just the lift and wheels/tires.

Was also wondering what all I would need to upgrade to run 37s, or if that would even be a good idea in general on this model.

Thanks in advance!

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[RangerRobAZ]

Sorry I am pretty clueless about your questions, but just wanted to say congrats on the purchase! Welcome to the most fun vehicle you can own and one of the very few that still has any kind of personality .. at least in my opinion.

 

[Andyyy]

Sorry I am pretty clueless about your questions, but just wanted to say congrats on the purchase! Welcome to the most fun vehicle you can own and one of the very few that still has any kind of personality .. at least in my opinion.

Thanks! Seems like a very cool aftermarket for these.

 

[cOtter]

I am fairly new as well but from what I have seen a lot of the answer to your question may be dependent on how aggressive you plan to be on the trails. At least from many threads that I have seen about Mods.

I would recommend using the search function with something like mods recommended for moderate trail use. At least that will be a start. Get ready for your head to spin. There are about a many opinions on this topic as there are different looking Wranglers in the road.

But never the less..... I have found that many will jump in the discussion and provide their thoughts.

Btw.... congrats. I myself am waiting on delivery of my first Jeep. Target ETA 9/13.....

 

[Dkretden]

Hello all! I recently purchased a 2018 JL Sport S Unlimited(2.0t). This is my first jeep and I just wanted some input on the parts list that I would need to run 35" tires with no issues on or off the trail. I am not sure If I need anything else besides just the lift and wheels/tires.

Was also wondering what all I would need to upgrade to run 37s, or if that would even be a good idea in general on this model.

Thanks in advance!

For 35’s you will need a quality lift of likely 2” or more.

If you are going to run 315/70/17s, some tire shops will mount those on your existing 7.5” rims. If you go this route, work with your tire shop to make sure that you can do this on a sport or if you will need wheel spacers. Searching the boards here for folks with sports and 315s will also help.

If you want new rims, make sure that you take into account the rim’s backspacing/offset as those numbers will push or pull the tire out or in relative to its current position on your Jeep now.

To run 37’s on a sport, many would suggest that you will also need to re-gear. Some would even suggest that you should consider re-gearing for the 35s. For 37’s you will likely need to modify your rear bumper and spare tire carrier for clearance and weight.

Personally, I wouldn’t put 37s on a sport, but that’s just me. I am quite sure that you can find several sport owners on this board with 37s who can tell you exactly what they did, why they did it, and how it’s working for them.

Good luck!

 

[Wrangler-NS]

35's will require a lift of 2" (or more) and wheels with the backspace / offset so there is no rubbing when you turn. You also need to think about adjusting your speedo for accuracy. On 35's you are going to lose 8th gear if you are running an automatic. Off road, you will need to be careful with the skinny pedal rolling on 35's.

I would not recommend 37's on a Sport. If you do, it would require a much bigger lift and I would swap axles with proper gearing. The Dana M186/200's are not going to last long with 37's rolling on them if you go off road.

 

[GreyFox]

Welcome to the family BUT, pics or it didn't happen Post some pics of that gorgeous Jeep

 

[UKCATS]

Welcome. Nice ride in your avatar.

 

[Andyyy]

Awesome info, I will most likely end up going with 35s. It will not see trails all that often and when it does nothing too serious. If I understand correctly, if you use a Mopar lift you will retain the warranty?

 

[Sean L]

Awesome info, I will most likely end up going with 35s. It will not see trails all that often and when it does nothing too serious. If I understand correctly, if you use a Mopar lift you will retain the warranty?

Looking good!

 

[TJ2018]

Awesome info, I will most likely end up going with 35s. It will not see trails all that often and when it does nothing too serious. If I understand correctly, if you use a Mopar lift you will retain the warranty?

Nice! We took almost identical picture when we bought ours

I've heard conflicting reports on whether the Mopar lift affects the warranty. If installed by a dealer that would improve your chances. There are other threads on here that go into that topic. But as a general rule of thumb any modification can affect the warranty (especially if the mod could have caused the failure); such as larger tires could affect the drivetrain warranty. Even Mopar parts aren't covered by warranty unless installed by the dealer.

Great color choice! This is our "fresh off the lot" pic

 

[Andyyy]

Nice! We took almost identical picture when we bought ours

I've heard conflicting reports on whether the Mopar lift affects the warranty. If installed by a dealer that would improve your chances. There are other threads on here that go into that topic. But as a general rule of thumb any modification can affect the warranty (especially if the mod could have caused the failure); such as larger tires could affect the drivetrain warranty. Even Mopar parts aren't covered by warranty unless installed by the dealer.

Great color choice! This is our "fresh off the lot" pic

That rubi looks awesome!

 

[STLYoungblood]

Awesome info, I will most likely end up going with 35s. It will not see trails all that often and when it does nothing too serious. If I understand correctly, if you use a Mopar lift you will retain the warranty?

I'm obviously no expert, but I think the overwhelming consensus is that aftermarket parts are ok and will not void warranty unless they directly lead to the failure of other parts. So for example, if your lift was the direct result for a failure of something different, that may not be covered, but if your UConnect randomly failed, it would have no relation and should be covered. I think that makes sense and there is some legislation that protects us, but I would at least get your dealer's opinion on it.

As far as the other questions, for 35's, you'll want a 2" or greater lift. That can be a budget boost like the RC one, or it can be a full suspension one, but you just need the higher clearance. The Rubi comes with higher fenders, so it doesn't have the same requirements. I think you can technically fit 35's without the lift, but they will really be stuffed in there and will likely rub. I would also try to get those Euro fenders out of there regardless because that's where a lot of people feel the rub.

 

[Sorbs]

Hello all! I recently purchased a 2018 JL Sport S Unlimited(2.0t). This is my first jeep and I just wanted some input on the parts list that I would need to run 35" tires with no issues on or off the trail. I am not sure If I need anything else besides just the lift and wheels/tires.

Was also wondering what all I would need to upgrade to run 37s, or if that would even be a good idea in general on this model.

Thanks in advance!

Mopar or other brand 2" lift - this will allow you to run 35s without replacing the fenders
For 37s you'll need to recalibrate your transmission to work with increased tire size. This means either having a dealer do it or buying a programmer. Gearing may be something to look at too since on your Sport the ratio is 3:45. Some complain that 4.10s in the Rubicon need swapping but that could be they've not recalibrated the transmission.

 

[Wanted33]

Congratulations, and welcome to the Jeep family Andy. Remember, when the "mod bug" bites he won't let go.

J-Just
E-Empty
E-Every
P-Pocket.

Enjoy.

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