wheels and tries

[rameeker]

well i am new here and new to jeeps I took my grandson to jeep invasion 2 weeks ago and he had a blast so now I jut bought a 2014 Rubicon unlimited
my question is the jeep has 37 x 13-5 x 22, I have heard that with those size wheels and tires you need to change the gears, I don't want to change gears what
size wheels and tires do i need to get and I don't have to change gears.

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[Nokones]

What gear set do you have now?

 

[rameeker]

i am not sure i am new to jeeps the guy i got it from didn't know

 

[lashlee]

In general, you don't have to change gears. Performance and mileage will suffer but many people have used larger tires and not geared for years. It helps to know which motor you have. It depends on what your plans are and what you can afford, and who is doing the work.

 

[rameeker]

it has the 3.6 liter im not going off road just doing short traveling trips like 4hrs away from home and weekend driving around town im thinking about trading for 35x12.5x20" what are your thoughts

 

[2018JLUsed]

This is my wife’s 2018 JLU on 35-12.50-20’s. No lift at all. No rubbing unless she hits a big hole or bump. I have a 2 1/2” lift kit to put on it, which should help.

I don’t know what gear it has, as she bought it used. It’s very peppy though. The speedometer is about 10% fast at 55 mph. It’s got the gas V-6 with the automatic.

 

[Fergshouse]

Hey 2018JLUsed - nice looking rig. Can you post a photo from the side? I’m at 33”s (285/70r17) and thinking going a little bigger but not sure clearance. I have stock suspension on a 20 Sahara JLU.

 

[Upnarms]

You'll want to find out what gearing it has for sure. It is a JK so you won't have the 8spd auto to compensate like the JL has. If you have the 5spd auto and stock 4:10 gearing you will definitely be feeling it on hills and trips into the mountains and i would assume off roading. It's doable for driving around town, just not ideal.

You can find out your gearing the non invasive way by the following

With the vehicle in neutral, mark the drive shaft and a tire, then rotate the tire while counting the number of drive shaft revolutions required for one tire revolution. Multiplying the number of revolutions by two will give the gear ratio.


Then you'll know if the previous owner regeared, but i would imagine not.

I personally like 35s over 37s if you aren't of roading cause there is generally less modification needed to steering and suspension components needed. On a jk, with 37s, you would really want to beef up the front end or things will wear out pretty fast- track bar upgrade needed for sure, tie rod, drag link, probably ball joints, etc. Hard to say without knowing what was already done to it.

And lastly, get out of those 20s! 17s are a great size wheel that will give you a lot more side wall for your tires. Just my opinion but if you do decide to do any off roading, even if only on forest roads, you'll appreciate the comfort of a 17" wheel.

Most of all enjoy it and truly if there are no drive issues felt and you don't feel a noticable lack of needed power, leave it alone until you do notice problems. A regear would get you a little more get up and probably a gas mileage boost but you have to decide if it's worth the expense for your needs.

My jk was a sport with 3:73s and 33s. If i went any larger on tires i would've regeared for sure, but a Rubicon has 4:10s so you have a little more wiggle room.

 

[Punkn89]

it has the 3.6 liter im not going off road just doing short traveling trips like 4hrs away from home and weekend driving around town im thinking about trading for 35x12.5x20" what are your thoughts

I’m assuming most 35x12.5r20 are going to be E rated which will make your ride quality suffer. If you must go bigger, which it sounds like you don’t really need to, drop to 17 inch wheels. Get a 315/70r17 or 285/75r17 In a C load.

 

[Upnarms]

I’m assuming most 35x12.5r20 are going to be E rated which will make your ride quality suffer. If you must go bigger, which it sounds like you don’t really need to, drop to 17 inch wheels. Get a 315/70r17 or 285/75r17 In a C load.

Ive had e load 35s on my 19 rubicon for 3 years and they ride great. It really isn't the harsh ride everyone fears. However, i have 17s not 20s. My truck has 20s with a 34 e load. Also no ride issues but i don't off road it a ton. Many manufacturers make 35s in c d and e load now. E load can go up to 80psi, but that would be if you were towing 15k lbs basically! I run mine at 35-40psi and i doubt you would notice the difference between that and the c with the same tire pressure.

My jeeps used to run bfg ko2s c load. I was disappointed in how they performed- fast wearing, prone to dw after 20k miles. All my vehicles run falken wildpeaks at3s and at4s. The larger ones (35s and 34s) are e load, the 31s on my tj and xj are c load. Great tires btw. Best I've owned in 20 years of jeeping.

Just posting my personal experience, yours may be different

 

[Punkn89]

Ive had e load 35s on my 19 rubicon for 3 years and they ride great. It really isn't the harsh ride everyone fears. However, i have 17s not 20s. My truck has 20s with a 34 e load. Also no ride issues but i don't off road it a ton. Many manufacturers make 35s in c d and e load now. E load can go up to 80psi, but that would be if you were towing 15k lbs basically! I run mine at 35-40psi and i doubt you would notice the difference between that and the c with the same tire pressure.

My jeeps used to run bfg ko2s c load. I was disappointed in how they performed- fast wearing, prone to dw after 20k miles. All my vehicles run falken wildpeaks at3s and at4s. The larger ones (35s and 34s) are e load, the 31s on my tj and xj are c load. Great tires btw. Best I've owned in 20 years of jeeping.

Just posting my personal experience, yours may be different

Ride quality definitely differs per person, but I will add if you don’t need the extra 20lbs per corner, it’s not worth it.

 

[2018JLUsed]

Hey 2018JLUsed - nice looking rig. Can you post a photo from the side? I’m at 33”s (285/70r17) and thinking going a little bigger but not sure clearance. I have stock suspension on a 20 Sahara JLU.

It’s the wife’s Jeep. I have a black standard grill and the lift kit to go on soon.

I’ll check the gears when I put the lift on it.

 

[Heimkehr]

well i am new here and new to jeeps I took my grandson to jeep invasion 2 weeks ago and he had a blast so now I jut bought a 2014 Rubicon unlimited

Welcome to the forum.
Just a friendly FYI: This particular forum is for the 2018+ JL-generation Wranglers. Your '14 is a JKU. With that in mind, you may eventually have a question that compels us to direct you elsewhere. There's a deep knowledge base here, though, so hopefully you'll receive the assistance that you require.

 

[Terrymo]

well i am new here and new to jeeps I took my grandson to jeep invasion 2 weeks ago and he had a blast so now I jut bought a 2014 Rubicon unlimited
my question is the jeep has 37 x 13-5 x 22, I have heard that with those size wheels and tires you need to change the gears, I don't want to change gears what
size wheels and tires do i need to get and I don't have to change gears.

If nothing has been changed you could try this

If you want a Build Sheet, add the VIN to:
Equipment Listing

if you want a Window Sticker, add the VIN to the end of this after vin=
https://www.chrysler.com/hostd/windowsticker/getWindowStickerPdf.do?vin=

 

[2nd 392]

it has the 3.6 liter im not going off road just doing short traveling trips like 4hrs away from home and weekend driving around town im thinking about trading for 35x12.5x20" what are your thoughts

Agree with downsizing, recommend Toyo AT3 35/12.50/17/C, at 59 lbs the lightest 3 peak, and good overall performance, will work on stock 17x7.5” pull off wheels if cost limits , I ran them on stock wheels for ~ a year.
Sell the 22” wheels and get 17’s regardless of tire choice, you will have more choices.

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