Front end shakes hard at 30 mph

Tire balance first and have them shake down ft end

check your wheels balance,If the problem still check your rims whether you have any slight bend,

does it go away when you turn the wheel left or right, if so its probably a wheel bearing

A few possibilities.... bent rim, broken steel belt in tire, or a wheel weight that keeps the tire/wheel combination in balance has fallen off. Not sure how big the bump was, so other options would be suspension related. I would check the tire and/or wheel first.

It can be the suspensions or the shock absorbers, check also the engine mountings.
i will be good to take a full checkup of all the links and suspension bushes in the car. so a full test on the shocck absorbers, test the wheel bearings the hubs and if the discs are bend even is if the balancing was done.

My immediate quick test would be to move the front tires to the back (and backs to front, of course) then try it out. If the vibration is still there but feels like it's coming from somewhere else (vibration could feel like it's in in steering wheel or seat), you've got a broken belt or bent rim (wheel). Don't want to get your hands dirty? Get all 4 wheels balanced -5 to 10 bucks per wheel.

Check your wheelbearings for play and your tierod ends for play,I'm sure one of these two are at fault.

could be a bent rim ? have you changed the universal joints? how about the tie rods and stabilizer bar

I have this same car with exactly the same problem. Begins shaking at 40mph and stops shaking as soon as you let off the gas, but then begins again as soon as you press on the gas and smooths out as you get over 50. And the shaking is not felt through the steering wheel. Solution: Replace the transmission mounts. There are two of them, one on each side mounted on the frame right next to the shock strut. There is also a front and rear engine mount, but I replaced the two as described and shaking is gone.

try getting the wheels balanced