I have a 1990 f150 and the front end just started hoppin really bad. I have 35in ground hawgs and its never done this before with them. Im not really sure what is causing it any ideas would be much appreciated

 

It could be bad ball joints, radius arm bushings or ttb bushings. have you balanced the tires? hope it helps.

 

gone muddin' lately? Mud in the rims made mine hop pretty bad around 60mph

 

yea the tires are balanced and the way the are hopping is defintely not a balancing problem but thanks for the help and rims are clean. Would the shocks or springs cause any problems if they were bad?

 

no, its most likely ball joints or bushings.

 

this happened to me and i replaced ball joints, radius arm bushings, wheel bearings, and front hubs and its still doing it so the only other thing would be maybe u joints or the ttb bushings if i figure this out ill let you know and if you figure it out let me know..