Front wheels shake when i reach 50 to 55 mph - 2006 Jeep Wrangler

tire seperation,,bent wheel,tire out of balance,,,very loose tie rod ends,,prob. a tire trying to seperate,,,b careful

Wheel bearing? If you turn left and it gets louder. It is the right wheel bearing. And vice versa.

sounds to me like you need a front hub assembly, but you could also have a severely
bent rim

possible a wheel alignment possibly from the rear wheels and loose/worn suspension rubbers

Could be a wheel, tire, or axle shaft.
You could rotate the tires front to back and see if the vibration moves.
If it does the problem is one of the tires or wheels.
If it stays in the front, its probably one of the axle shafts. It could also be a hub bearing or something loose in the suspension. But a loose suspension part would normally show up when you hit a bump rather than on a smooth road.

You don't have the year or anything on your post, but i'm assuming it's front wheel drive, and your problem is likely CV joints. You will have to replace them. The easiest way is to buy half shafts. That would explain the shaking when you turn right, but as for the shaking up to 70, you either have a wheel out of balance, or bent rim, or a tire that has gone out of shape.

is it a 4x4? check the front u joints.

jack it up and spin the wheel ,could be rim or it could be a deformed /damaged tyre

Tires would be the 1st place to check. If you seem to feel it more in your legs then it is likely the front, if felt more in seat bottom then could be a rear tire. Depending on how severe the vibration is there could be a tire developing a tread seperation and should be checked right away. A simple balance of the tire and wheel assemblies may be all that required also but when on a balancer they should be able to tell if the tire has a more severe problem.
Driveline components could cause vibrations also however if the above sounds like it fits then check that 1st.

have a tire shop balance your front tires.