Mods required to run 37" tires on 2dr Rubicon 3.6

littlered_jk

littlered_jk

Member
I'm thinking about upgrading my 35 inch tires to 37's. and I have stock Rubicon axles with the C gussets gusseted I am a light to moderate off roader very minimal rock crawling can I get away with it with the current setup or do I need to beef up axles more
 
wayoflife

wayoflife

Administrator
Staff member
Yeah, you can make it work. Speed more than anything will bend an axle housing and I wouldn't throw anymore money into what you have now. If anything, you may end up needing new front axle shafts but, I would deal with that when you get there. What you will want with a set of 37's is a regear. I personally would recommend 5.13's.
 
littlered_jk

littlered_jk

Member
wayoflife said:
Yeah, you can make it work. Speed more than anything will bend an axle housing and I wouldn't throw anymore money into what you have now. If anything, you may end up needing new front axle shafts but, I would deal with that when you get there. What you will want with a set of 37's is a regear. I personally would recommend 5.13's.
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Cool. I'm looking into the mastercraft courser mxt. Couple of my jeep club friends have them and like them. They've been measuring around 35.5 mounted. Any thoughts on these tires.
 
wayoflife

wayoflife

Administrator
Staff member
littlered_jk said:
Cool. I'm looking into the mastercraft courser mxt. Couple of my jeep club friends have them and like them. They've been measuring around 35.5 mounted. Any thoughts on these tires.
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First, ALL tires have a true measurement than what is stated on the sidewalls and if anything, 35.5" sounds like a nice 37 on the tall side. I have no experience running the Mastercraft MXT's but they do look nice.
 
jkwebbie

jkwebbie

New member
littlered_jk said:
Cool. I'm looking into the mastercraft courser mxt. Couple of my jeep club friends have them and like them. They've been measuring around 35.5 mounted. Any thoughts on these tires.
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I have 37 Mastercrafts on my 2 door and love them. I've took them on quite a few tough trails and haven't had one problem with them. And they are pretty damn quiet for a mud terrain.
 
jkwebbie

jkwebbie

New member
Here's some pics of them on my Jeep
 

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hinrichs

hinrichs

Caught the Bug
On my previous 2 door, I ran 37s with 3" Evo plush ride coils and loved it. Very capable on all trails I took it on. All I did was gussets and shafts. I would deff suggest a regear tho, as that was something I never did.

Those tires do look great, and have a good price point as well it seems.
 
RebelconJk

RebelconJk

New member
I'm running Mastercraft 37" on my 2-door as well, great tire super quite on the road! I also have a Rubicon, i did cromo axle shafts, 5.13 gears, and C gussets up front. 5.13 works well for me i have a manual trans.
 
littlered_jk

littlered_jk

Member
jkwebbie said:
I have 37 Mastercrafts on my 2 door and love them. I've took them on quite a few tough trails and haven't had one problem with them. And they are pretty damn quiet for a mud terrain.
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Nice jeep too. Gecko is a great color. Can't wait to see what the hypergreen will be like for the 2016 model
 
hinrichs

hinrichs

Caught the Bug
shadowpaige64507 said:
Good to know. I just assumed from some of the posts I read it would be required. Thanks for the reply :thumb:
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You will notice in the rocks, is when it would be nice to have when you need to turn your wheels and you just cant without backing up a little if that makes sense.
 
jkwebbie

jkwebbie

New member
RebelconJk said:
Still liking those Mastercraft's? I got mine installed last week, loving them so far! I can't believe how quite they are on the road!
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Oh yea man, still liking them! I've had them on for about 2-3k miles now and still quite. They've conquered every trail I've took them on from Windrock Offroad Park in TN to the Gulches in SC and everything in between.

littlered_jk said:
What size lift you running?
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3" EVO coils with Clayton Offroad control arms
 
Clifford33

Clifford33

Caught the Bug
wayoflife said:
Yeah, you can make it work. Speed more than anything will bend an axle housing and I wouldn't throw anymore money into what you have now. If anything, you may end up needing new front axle shafts but, I would deal with that when you get there. What you will want with a set of 37's is a regear. I personally would recommend 5.13's.
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Hey Eddie what should I re gear my 4 door jk x to if I want to move up to 35s?
 
littlered_jk

littlered_jk

Member
hinrichs said:
On my previous 2 door, I ran 37s with 3" Evo plush ride coils and loved it. Very capable on all trails I took it on. All I did was gussets and shafts. I would deff suggest a regear tho, as that was something I never did.

Those tires do look great, and have a good price point as well it seems.
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What axle ratio were you running at that time
 
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