Suspension Lift Kit

[Gavin&Gage's Powerstroke]

I recently in stalled a 4" Rough Country lift kit on my truck. Added 2" wheel spacers and put on 315 tires. The truck shakes like crazy. so I took the spacers off and it still shakes and I had the tires rebalanced. Does anyone have an idea of what would cause this?

[WOODYBC]

Jack up each wheel and give them a spin!

[Gavin&Gage's Powerstroke]

What will that tell me. The truck shakes at around 40mph then stops and restarts shaking at around 65mph.

[WOODYBC]

You may see something out of balance, bent, or installed improperly. Do you have a steering stabilizer on it?

[Gavin&Gage's Powerstroke]

Not that I know of. should I have put one on?

[Gavin&Gage's Powerstroke]

I was there to help put the lift on and it didn't come with a steering stabilizer.

[WOODYBC]

Since you've already balanced the wheel/tire combo, take it for a drive and have someone drive next to you. I'd be your front tires are wiggling back and forth like crazy. You've changed the geometry of the trucks suspension and it may require one now.

[dieselcrawler]

Check wheel berrings, if one was bad with stock tires, and you put on bigger ones, it may make things worse. Another possiblity, does your rear drive shaft have center support berring, and if so, was it spaced down, normally about 1/4" for each inch of lift, from what I've heard. So, in your case, 4" lift, spaced down about 1"