tony991

I recently installed a 4" Rough Country suspension lift on my 83' f150 and when i go about 30-35 mph it starts shaking real bad. I have the same tires on the truck that i had before the lift and they are good.. Also when i hit a bump itll start shaking violently.. Any ideas will be much appreciated..

TYRANDOLPH333

bigger tires maybe? ive heard of peoples trucks doing that cuz they have to tiny of tires on it

Fast_V8

Wrong. ^

Its not the lift but the install. Check for loose bolts, specially the steering nut. If its even a little loose it could cause shaking.

l67cooled

Did you have it aligned yet? I'd go back and check your bolts, sound to me it will be solved with one of the two.

09dreamer

BTW, I had my lift installed a week ago and it is great. NO problems at all, even the Ford dealer was impressed with the level of quality. If you are having a problem with a 4", I would say it is most definately the install. Love my lift, I have pics in the "2009 - present f150" section. just search my name.