my problem came back

[bart6180]

awhile back i left a post about my truck, an 81 k-20 getting a violent vibration when i hit about 30-35 mph, i thought it was from the rear of the truck as the upper shock bolts were bent, i replaced them and the problem went away for awhile, now it back, the only way i can describe it is going over speed bumps with one side of the truck., but since i rotated the tires the problem seems to be coming from the front end now, could one of my tires have a bubble or slipped belt?? i looked under the truck and everything seems tight, no play that i can find.

[JayMack75]

Sounds like a problem I had. Check the sidewalls of your tires.

[unplugged]

Try rotating the tires back and see if the problem follows. While the wheels are off check the inner sidewalls for blems or bulges.

[84fiero123]

Most tire problems can be simple, they need to be balanced or rebalanced. Hitting a pot hole is all it takes to throw a tire out of balance.

Hitting a pot hole hard will brake a sidewall but is rare, unless the tires are under inflated, most of the time it is just an out of balance tire.

[FireRed]

Sounds like you almost answered your own question, take the spare and put it on the offending corner if that disappears the problem check and or replace that tire.