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Old 12-14-2019, 07:54 PM
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New LJ need help with tires and rim size

We just bought a 2004 Patriot Blue LJ measuring out to have a 5.5 inch lift, but it has the short arms on it, so questioning if its actually a 4 inch. Drives great, but it has factory tires and rims on it. This is the 5th Jeep for our family but our first TJ/LJ. Wondering what size tires and rims would keep it running good without losing too much power. It will be a daily driver for the youngest, and will be an offroad toy for the rest of us on the weekends. Looking at 15 inch Mickey Thompsons with either 33's or 35's. I have a JL with Nitto Ridge Grappler's on it that have about 50% left, they measure out to be almost 34's I could put those on it but I would have to run 17's if I did that and really questioning that for a TJ/LJ. Any thoughts would be welcome!

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Old 12-15-2019, 12:18 PM   #2
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Your 42rle auto will suck with larger tires and 3.73 gearing. The overdrive will have to be turned off because it's so steep. Stick to 33s until you regear it. I always stick with 15" wheels. The tires are cheaper and you have more sidewall.
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Old 12-15-2019, 01:14 PM   #3
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I run jk Rubi rims on 32in BFGs on one LJ. They look good and run well IMHO.



The other I run RockMonster beadlocks and a metric equivalent of 35/12.50R17 with 5.13 gears.



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Old 12-15-2019, 02:45 PM   #4
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My LJ is probably gonna get 17’s next. The selection of 37 & 38” tires is not very good in 15”. Looking at trail ready beadlocks so I can get them to the measurements I want.
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Old 12-16-2019, 12:01 PM
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Originally Posted by TheBoogieman View Post
Your 42rle auto will suck with larger tires and 3.73 gearing. The overdrive will have to be turned off because it's so steep. Stick to 33s until you regear it. I always stick with 15" wheels. The tires are cheaper and you have more sidewall.
Yeah this is exactly what we were thinking. I was thinking I would run 15's mainly because of the selection and cost, and leaning toward the 33's. As always I appreciate it!
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Old 12-16-2019, 12:02 PM
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I run jk Rubi rims on 32in BFGs on one LJ. They look good and run well IMHO.



The other I run RockMonster beadlocks and a metric equivalent of 35/12.50R17 with 5.13 gears.



Both of those look awesome! Great job on both of those. I think I am going to run 15's with 33's on it so we don't lose too much power.
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Old 12-16-2019, 12:05 PM
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I would love to go that big, but this one will be a daily driver so I am thinking we can't go that big at this point, it'll look amazing when you are done with it! Post some pictures when you get them on!
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Old 12-16-2019, 12:15 PM   #8
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going larger than 35's on TJ axles is not recommended. the axles are not strong enough to withstand the additional leverage and the overall geometry is worse unless you go to full width axles and a decent WB stretch. it can be done, but not by simply slapping larger tires on and upgrading to alloy shafts
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Old 12-16-2019, 06:14 PM   #9
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going larger than 35's on TJ axles is not recommended. the axles are not strong enough to withstand the additional leverage and the overall geometry is worse unless you go to full width axles and a decent WB stretch. it can be done, but not by simply slapping larger tires on and upgrading to alloy shafts
For some, not all
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Old 12-16-2019, 10:33 PM   #10
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I have a Patriot Blue LJ and am running 255/75R 17" tires, basically 32". My rims have a 4.5" backspacing, and I don't rub. I regeared my axles to 4.88, and glad I didn't go 4.56 or higher. If I'm only running around town or backroads, I turn off the OD.

My jeep has a 3" lift with skid pan dropped about an inch. I had no vibration until I regeared, but a set of adjustable upper rear control arms to set the pinion angle took care of that issue.
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Old 12-17-2019, 07:20 AM   #11
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For some, not all
are you saying that TJ axles are strong enough or can be built strong enough for 37" tires? or are you saying they may be ok for a mall crawler?
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Old 12-17-2019, 08:38 AM   #12
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For some, not all
are you saying that TJ axles are strong enough or can be built strong enough for 37" tires? or are you saying they may be ok for a mall crawler?
I’m saying I don’t have TJ axles
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Old 12-17-2019, 09:18 AM   #13
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going larger than 35's on TJ axles is not recommended. the axles are not strong enough to withstand the additional leverage and the overall geometry is worse unless you go to full width axles and a decent WB stretch. it can be done, but not by simply slapping larger tires on and upgrading to alloy shafts
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For some, not all
Quote:
Originally Posted by Ironhead Jed View Post
are you saying that TJ axles are strong enough or can be built strong enough for 37" tires? or are you saying they may be ok for a mall crawler?
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Iím saying I donít have TJ axles
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Old 12-17-2019, 09:48 AM   #14
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I didn’t bring up axles nor do I care if someone runs 40’s on a stock 30.

My point was that if someone wants larger than 35’s then they should consider 17’s due to selection.

I personally think the LJ is suited for a little more tire than a TJ.
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Old 12-17-2019, 10:06 AM   #15
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I didn’t bring up axles nor do I care if someone runs 40’s on a stock 30. thats the problem, its bad advice

My point was that if someone wants larger than 35’s then they should consider 17’s due to selection. which would be on a stronger axle with a different bolt pattern, opens up a whole new world

I personally think the LJ is suited for a little more tire than a TJ.maybe in looks and a little bit longer wheelbase is beneficial for 35's on climbs, but they are not any more equipped to handle larger than 35" tires when compared to a TJ
The OP also didnt mention upgrading axles, promoting larger tires than the axles are capable of running is not beneficial to the user or the forum
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Old 12-17-2019, 10:27 AM   #16
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I didn’t bring up axles nor do I care if someone runs 40’s on a stock 30. thats the problem, its bad advice

My point was that if someone wants larger than 35’s then they should consider 17’s due to selection. which would be on a stronger axle with a different bolt pattern, opens up a whole new world

I personally think the LJ is suited for a little more tire than a TJ.maybe in looks and a little bit longer wheelbase is beneficial for 35's on climbs, but they are not any more equipped to handle larger than 35" tires when compared to a TJ
The OP also didnt mention upgrading axles, promoting larger tires than the axles are capable of running is not beneficial to the user or the forum
OP specifically mentioned running 17’s.
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Old 12-17-2019, 11:40 AM   #17
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OP specifically mentioned running 17ís.
on stock axles, which many feel is a mistake for the reasons already brought up. worse for airing down, more expensive, and can't run larger than 35's on OEM axles.

a benefit for running 17's is slightly less sidewall flex on turns at higher speeds. its not that you can run larger than 35" tires

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