2006 f250 crew cab
6.0
98k on truck
Tires - stock size
Around 58 to 65 truck has a bad shake. Tires look smooth.
Any thoughts. Front end parts I should be looking at? Has anyone had this problem?

 

Ball joints first. You can lift the wheel off the ground and use a crow bar to lift in the ball joint seam and see if there's play.
Also Check your tires for delamination as this can create a harmonic vibration at certain speeds too. U joint/s next.
2 or 4 wheel drive?

 

4X4 ..

Lamination? Sorry.. like cupped?

 

I've had this happen twice and both times it was internal tire failures. That had a slight bulge in the tire that got big.

 

Nope. Look closely at the tire threads and if separated, the tire will be a bit wider or bulging then the rest of the tire.

I've had 3 or 4 delaminate over the years. Feels like a waw, waw, waw when driving along. Almost like it kicks you sideways a bit.

 

I will inspect them throughly tomorrow.
It's weird cause the truck only shakes at those speeds.

 

tires out of balance
tires have water in them which has frozen and acts like a weight
mechanical problem such as bearings, rod ends, etc

 

We can for sure eliminate the 2nd. Option. .. I live in florida. I have a hard enough time keeping ice in the fridge. Lol.

So if the tires seem to be real smooth it's probably in the front end somewhere.

 

I had the same thing on my stock tire sized tires and it was actually the tire wear/balancing i found out as i got my 35's put on. They felts smooth but the tire shop said they had a weird wavey pattern worn into them and 2 were out of balance.

 

I would first have the tires checked out for proper balance. Does it seems to shake the wheel or the entire truck? One less expensive but more labor is to swap the tires from front to rear an see if the shake changes. For instance I it feels like it's hopping a little and you swap tires and then you can feel it in the steering wheel or vice versa then You know it's a tire issue. You can then only switch one side front to back an morrow it down to which tire. If it makes absolutely no difference then you can start trouble shooting the truck. In the speed range you have given it leans towards a tire issue.

 

Yes.. it's in the steering wheel from what I tell.

 

I would assume its a tire issue i had the same exact thing, if you go faster does it get worse? If i remember right mine got really bad like couldn't control the wheel at around 75 then 80 would get better (i dont go faster than 65 usually just tried it to try and diagnose).

 

I have the shaking problem at the same speeds but don't feel it in the steering wheel. I've had ball joints replaced, wheels bead balanced, entire driveline checked, with no resolution. This seems to be a common problem with Super Duties.

2005 F350 SuperCab Short Bed, V-10, 4x4

 

Where do you feel the shake?

 

In the seat I guess is the best way to describe it. I can see the bed shaking in the mirrors as well.


2005 F350 SuperCab Short Bed, V-10, 4x4