More caster is the best place to start. And the way to get there is to install adustable front LCA's. Shoot for a little over 6 degrees caster. Although the pic below is from a JKU forum, it applies to the JL as well. Contrary to what others say, you do need an alignment from a knowledgable shop. That's what the "adjustable" is for.
Justin, I don’t recall where in SW FL you are. I highly recommend you call Blake at Action Auto Center in Sarasota. Even if you are too far to take your Jeep there, Blake is a great dude and will probably give you some very solid advice.
That’s exactly what’s on my wife’s Sahara and her’s is all over the road too, worse than mine. I always just thought that it was a “Jeep thing.” Obviously there is something that needs attention.
Thank you. I am in the Ft Myers area. Sarasota is not too far for me at all. I’ll give him a call in the next few days.
Not stupid. Mine is for highway 99% of the time. I love it too. I will keep it as long as I can fix anything that needs fixing.
Looks like that size AT4W only comes in an E load range. That means you are running a very heavy and stiff tire that is capable of running on a fullsize heavy duty pickup. A lighter weight tire usually helps some also.
For reference E load range are definitely the wrong tire for your application. They're going to be stiff as hell and really exaggerate the problem. You'd want to run them at like 25 psi, which will cause much faster wear (and a tpms warning)
I disagree, especially with a smaller tire. 39s are going to have alot more sidewall and be more compliant than a smaller tire. I ran load range E 35s on my F150s that came with 32ish(275/65R18 ) factory tires and the ride is much more harsh. You are definitely correct that you can air them way down without worrying about wear, those things last forever on lighter trucks and SUVs.
I have E rated KO2's on the JLUR I recently purchased and I have tried several PSI settings from as high as 42 to as low as 28 cold where it currently has been for a week or so. The sweet spot for me has been 32 PSI cold and that's where I'm going back to. It wasn't perfect but I experienced the least amount of wandering. I also recently had the aluminum steering box upgraded and an alignment was performed as part of the job. Somethings the thing drives like my Infiniti SUV with air bag suspension (smooth and straight) and other times like a Farmall tractor. The inconsistency is frustrating at times but not the end of the world.
The less sidewall you have to with with the stiffer it will feel at a given pressure. Airing down will still work unless you're running rubber band street tires on 24" wheels. I don't care if it's a stock size 32" tire, at 20 psi it will ride like a c rated tire at 30+ psi. There are loads charts available from must tire manufacturers and you can easily find the crossover point where your E rated tires match the c rated tires. You certainly don't need to go buy new tires to get the same ride.
