Violent shaking around 50

Ok I'm stuck in the middle of no where. My truck starts shaking around 50 and gets worse as I acclerate. I'm running on my spare but it wasn't doing it before I went mudding and got stuck and my dad had to pull me out. So I think it happened when I got stuck mudding do yall know what might be wrong please let me know soon! Ps I checked my lug nuts they are fine and alignment looks fine.

 

Is there still mud in your wheels. Mine always shakes until I can get the dirt out. Throws the balance of the tires off.

 

any mud caked in your rims?

 

x3 on the mud caked on the tires/wheels!!!
Just a small bit of mud=a wheel weight. First depending on how agressive your tire tread is, check for stones stuck in the treads, if not then take it to a car wash and clean all the mud off from the outside AND the inside of the wheels. If stiil not the solution then maybe the spare was out of balance to begin with?
Good luck! Let us know how you make out.

 

Thank yall so much! After reading yalls posts I went to a near by self serve carwash and blasted my tires with the pressure washer and it was fixed.