I have a small problem with my 95 toyota pickup 3vze 5 speed. I put 31's on a while ago with junkyard rims. Every once in a while when im cruzin bout 70 or above i get a vibration that starts every 3 seconds and lasts about 5 seconds long then goes away. It isnt in the steering wheel but feels like its comin from the bottom. about 8000 miles on the tires. The tires are Lemans A/T. It isnt very noticable but when i get on long drives to school and back (200 mi), i notice everything

 

the wheels were balanced after you got em right?

the other thing to check would be the various driveshaft joints for excess play.

 

one of the rims is slightly bent, being junkyard rims im sure thats what it is.

try rotating your tires, crisscross, and it should stop.

 

thanks. yeah i got the tires balenced but they had to put weights on both sides of the rim. hmmm actually im sorry you are right i had a problem in the steering wheel over the summer now it feels like its in the ass end. thanks guys

 

my steering wobbles cuz of a horrible alignment, and my wheels needing to be rebalanced...i get the under the truck wobble at high speeds too...kinda bothers me, but im sure it will be resolved once i take care of the tire issues...