major problem help needed

[NighthawkVTX]

this morning I was riding on the interstate on the way home from work. I started to feel like I was having difficultly steering in to the curves of the road. At first I thought it was me just being tired from working a twelve hour night shift. I finally decided to pull off to the shoulder just to check thing out. As I was slowing down on the side of the road, the front end began to shake violenty. It shook so I hard I thought I was going to come off the bike.  I eventually was able to bring the bike to a stop. I looked around and couldnt see any obvious reason for the events that happened.  I got back on the bike and started to move forward, at about 25mph the front end again shook violently. Any thoughts on what can be causing this?
It scared the crap out of me.

[Chrisj CMA]

Tire pressure?

[sandy]

Keep it at 40-42 PSI.

[old2soon]

    Have a look at both shock bushings on both shocks. The bolt should be centered. Let the rest of us Know WHAT you find please! RIDE SAFE.

[hubcapsc]

Brakes? Calipers seizing or loose or something...

-Mike ?

[Grandpot]

Get the front end off the ground.  Shake the forks front to back and left to right.  Grab the front wheel on the top and bottom, shake.  Grab the front wheel in the front and rear, shake.  Did you find any looseness?

[98valk]

check what has been said, and check the front wheel bearings.

[Ricky-D]

Sounds like the tire has gone to crap.

Like maybe a ply separation or something on that order.

***

[gordonv]

Tire pressure, flat tire.

Valve stem, which type and is the plastic support there? You need to replace with the metal ones we are now all moving towards.
https://www.rockymountainatvmc.com/tires-and-wheels/myers-90%C2%B0-tubeless-chrome-valve-stem-p

[Gryphon Rider]

Keep it at 40-42 PSI.

Yes, but did you check the pressure during/after your incident?  You haven't made that clear.