Low speed vibration

[ColtSeevers]

Hi all, I've searched a lot and can only find info on highway speed vibration issues. We have a terrible vibration that starts about 6mph gets worst at around 9-10mph and disappears around 15mph. 2020 JL 2dr rubicon with 3.5 terraflex st3 lift. We have geo correction brackets on front. 37 bfg km3 tires. There is only 20k on the jeep and only 15k since the lift was installed. All the driveshafts are stock and I see zero issues with the cv boots etc. Absolutely zero vibrations at any normal driving speeds but if your just idling through a parking lot it rattles everything. Not sure if I should try pulling each driveshaft one at a time or what. At first when it was mild I thought maybe the mud tires, I was running 25 psi have changed up to 35 psi and no noticeable difference. Now its seems to be getting worse/ more pronounced. Anyone had anything like this before?

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[Shibadog]

Tires may be the issue (though I’d think that would get worse at speed).Maybe a missing wheel weight or out of round?

 

[stumblinhorse]

Sounds like u-joints somewhere. Check them for play. If it just like a rumble, it is tire tread. But vibration is u-joints.

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