I have a 10 bolt chevy front axle in my truck, I had sears allign it (toe) with the stock tires I had because the arms would go over the 40's, I have hy steer on it with no stabilizer and Im running 40" michey Thompsons. When I get going down the road and Im in 4th gear and I hit a bump or anyhting it jsut starts shakeing bad and the steering whell start to go back and fourth like its out of alignment. Whjat the fuck is going on??

<FONT COLOR="Red"> You need the steering stabilizer, dude... </FONT c>

What's going on is death wobble. If it didn't do it before the alignment then they may have set the caster wrong. if not then check all your TRE's or ball joint's.
A steering stabilizer or two will help. Or go hydro assist and it will cure it. Sorry not trying to be a salesman.

weebles wobble but they dont fall down. seriously with those tires any bit of play in the steering is gonna cause it. make sure everything is tight and the stabilizer will help

I have brand new heim joints, brand new ball joints, it did it real bad beofre I had it alligned. I will try the stabilizer, thank yuo guys.

Lance

death wobble sux bad!

*wheels bad balance
*excesive toe in
*play in bearings (knuckle or wheel)
*shot bushings
*loose/wore tre's

dampners help allot but try and find the sorce. <IMG SRC="smilies/smile.gif" border="0">

bear in mind that the allignment with stock tires may not be the proper allignment for the 40's. The toe in may be excesive if set with smaller tires.

too much toe in or not enough caster. Also steering stabilizer should help