I think I've got an odd thing going on. two weeks ago, I put in new u-joints, shocks, and rotated tires. I haven't rotated tires in a year. Since then, I've noticed something odd. I hear a "wop-wop-wop" noise that sounds kinda like a broken belt in the tire. At first I didn't feel anything, but now I feel a slight grind/vibration in the floor board during each "wop". I've rolled down the window, but can't hear it as much as if I have the window up. I've shut the engine off and just coasting out of gear...still hear/feel it. On my way to work today, I was trying to watch the speedo; it starts around 15mph and quits around 55/60mph.
I jacked the front up and spun the tire. I don't hear any grinding. There is no play in 12/6 or 9/3 hand positions. I did notice some thing weird though on the driver's side wheel. If I *just* turn the wheel a bit, like a 1/4 - 1/2 inch, there is a "tick" noise. If I spin it slowly, I hear a rubber squealing on metal sound. I'm sure it isn't the caliper scraping on the rotor...different noise. I did record a quick sound clip of this, listen to this
. First thing you hear is the tick, then the rubber squealing noise. Then you can hear me spin the tire, thumping it with my hand and you hear the rotor/brakes scratching. Finally, I move it just a bit each time to hear this tick noise.