When Ford went to the coil-over springs on the front axle in 05' they have had a few problems with death-wobble. They have it taken care of now on the 08's. I am not too sure of the fix, but if you go to the ford-trucks.com fourms they can tell you there. I would not worry about buying one though.

 

The first thing to do is to make sure the tire pressure is correct in the 2 front tires. I replaced a stabilizer thinking it was bad only to find out that when I used a guage on the tires and inflated them to 45 or 50 on the front, my problem went away.

 

is he running a diesel ? most of front ends on any diesel truck are weak don't build them like that used too . the best way is to test it out yourself on test drive then you'll know . i really wouldn't worry about it there alot of issue that can be a factor for your buddys truck its hard to diagnose without seeing a feeling it

 

I have an 06 F250 xlt and I experienced the same thing, a sever wobble going over bumps. Hitting it straight on isnt as bad as going over one thats on a slight curve. Its something I got used to, It isnt all that bad, or at least mine isnt. It definitely gets your attention at first.

 

My plain jane 06 F250 long bed is a hop and skipper over bumps, freakin hang on and hope it goes straight. But, what do you expect, stiff suspension, light truck, gas truck.

Now the 08 diesel crew cab short bed lariet rides like the caddy that it is......................What bump?? Did you fell something?? Nah, that was just the bass thumping from the movie playing on the dash DVD player.......................

 

If you hadn't said it, I wouldn't have noticed it. I have a regular cab 06 and I do notice it, but I just got used to it. I don't notice it in the 07 ext though...

 

It is not only the 05 and up my 99 has it to and I have replace the steering box twice and still have the death wobble when I hit a good bump in the road. The bigger the tires the faster the box wears out and also with the extra plow weight it wears out faster to.

 

My friends 04 f250 had the same issue, he got use to it though. My 08 f350 dosent have a problem.

 

Guy's don't get used to it!! Get it fixed or fix it yourself!! I took mine to the dealer 3 times till they got it right. Yes start with tire pressure but don't stop there. It needed new caster bushings on the front axle (the cause), but from the bushings being out it wrecked the steering damper and scrubbed the tires so bad they couldn't realign it without new tires. And everybody knows what tires cost! That alone plus the safety factor of someone other than you ( wife , neighbor ) driving your truck and wrecking it/ killing themselves over a couple hundred bucks in parts?? should make you fix it tonite!