Front drivers side tire wobbling?

I have a lifted 1997 GMC k1500 4x4. Its got a 4 inch pro comp lift with 37 inch tires and mickey thompson rims. For some reason while im going do the road and hit a slight bump the front drivers side tire starts wobbling but after a few seconds it starts rolling fine and straight. You can see it wobbling the shaking is in the entire truck not in the steering wheel. At first i thought it was the missing stud it had or warped rotor. But i replaced the stud and rotor and its still doing it. Also then i thought maybe a bent rim. But it seems like it was doing the same thing before i got the tires rotated. What are the possible problems i could check if its not a bent rim? I dont really know much about suspension components. I dont think the tires are balanced or if the truck has been aligned after the lift kit was installed not sure if that could be the problem or not. Thanks!