My bet is tires.Death Wobble :(
Check into a new steering dampner, it's a common cause for shake at speed in a Jeep, but it could also be alignment or balance.
Death Wobble!
I don't know you tell me.
Bad tire, rim, u-joint,......
Sounds like wheel balance, but check the steering dampner.
suspension your steering dampner has gone bad, replace it and the shaking will stop.
its the pitmin arm or track bar i have seen it over an over again
Should shake or shimmy on acceleration, may also squeak and clunk.
Tires/wheels out of balance? Frozen brake caliper? Bent wheel?
Probably bad u-joints in the front. Had the same.
Tires out of balance, bent wheel, worn suspension or steering parts, bent driveshaft.