Hey all,

I have a quick question. A couple weeks ago I brought my truck (01 F150 4x4) in do have new rotors put on the front, new pads on the front, and rotate the tires. After I picked it up, I noticed a lot of movement from what feels like the front left (driver side) wheel, especially when I turn left and am going faster speeds. I can also let go of the wheel and see the wheel move left and right, although not a lot. When I'm going down the interstate, the truck not only shakes in the front but also makes a humming noise that increases and decreases constantly. Also, after I picked it up, I noticed the truck pulled to the left now and it never did that before. I went in to have my tires balanced to see if that was the problem, but its not it. It's hard to explain the feeling. It almost feels like the front left might be getting power but I know its not. Is it possible that it's just a bad tire and never noticed it because it was on the back? Any other suggestions!? Much appreciated!

Mark

 

Give those front tires(that were on the rear) a really good hands on and visual inspect. In my case it was a slipped belt with bubble on the inside third of the tire

 

Switch them back and, see if it is still doing it.I would bet its your tires.

 

Thanks, guys. I'll check the tires.

 

I'm a tire guy, 20 years of it...
I'd suggest running the palm of your hand over the entire surface of the tread. Start at the front near the ground and go around the tire's circumference feeling for a lump. Move the truck and finish feeling up the tire. I bet there is a lump. This is your tire dying, the tread separating from the carcass.
If it's not a lump you could have a flat spot. Did you ever lock up just one wheel?
Or it might be a bent wheel causing this.

The least likely thing is the rotor could have a piece of crud between it and the hub. Not likely if your brake tech is a pro. The last thing they do before installing rotors is to clean off the mating surfaces with mild abrasive.

 

The lump will be big enough that I could feel it protrude?

 

I didn't find any obvious lumps on the tires but I also didn't know what I was looking for. I'm bringing it in in the morning to have them look at the wheel.

 

Would the lumps be on the wall of the tire or on the treads? I did find 2 cracks along the wall of the tire. Could this have anything to do with the problems I'm having?

Thanks