WuTang

Since I've bought this truck I get kind of a "shuddering" or vibration when driving around 65 MPH. Right at 60 MPH, everything is fine, accelerate and it feels like the front end starts shaking, not like death wobble, but fairly noticeable and it almost seems as if there's a power loss. If I power through it and hit 70 MPH, it smooths out. It's bad enough that when it happens, my passenger seat starts shaking forward and backward if someone isn't in it. Seems to be less noticeable when other people are in the truck with me though.

Any idea what this could be? It seems to have changed a bit, as it's just around that speed now, and before when it would happen, it would stick around and if I came to a stop, then accelerated again (red light), it would shake even at lower speeds. Doesn't seem to be doing this anymore. I've also been tracking down a squeaking noise when there are multiple people in the truck while going over bumps and found it to be the bushing in the lower portion of the shock that connects to the mount, it seems to bounce around when you push on the truck, so I believe that's the cause of the squeak, as it sounds the same (why I didn't figure that out sooner, I have no idea). I'm doubting this is also what is causing this vibration though, figured it was worth mentioning.

It was running on 31s, but on Saturday I just purchased four brand new 235/75R15's and am still having the issue.

Any help would be greatly appreciated

SOFLANICK

Sounds like a ujoint. I think Im having the same issue also...

WuTang

Driveshaft?

Welder7018

Warped rotor maby

WuTang

A friend of mine checked out my rotors and said they look warped and suggested I replace them. It does shudder pretty bad when coming to a stop from a high speed, would a warped rotor still cause this at ~65 MPH if the brakes aren't applied though?

TylerF150

I say get the tires balanced professionally and see if that helps

Welder7018

It can but usually it's only under breaking. But I digested that because it's possible and ive seen it happen before at high speed

WuTang

They are brand new and were balanced at Discount Tire on Saturday.
Perhaps this could be an alignment issue?

twilliams9

Still sounds like the tires aren't balanced properly, take it back and tell them whats going on.

94Brodyf150

U joints