. May or may not be related...
After changing the tires Im almost pull and vibration free. Its a very slight constant
pull to the driver side and an intermittent
Conditions for vibration; Starts at about 25MPH under normal acceleration, then stops when it shifts to the next gear. Then again at 45MPH until shift (and Im sure some in between). If I hold a steady speed and pull off the throttle just a hair I will also have a vibration. Its a small but decent effect, enough to rattle plastics inside...
Noise; a faint whiiir whiir whiir, stopping in between.
Conditions before tire change; driver side tire had about a 7inch long bubble/knot. Before I noticed it, I checked any play in the system (by grabbing and moving the wheels by hand) and found none. Only when both wheels are suspended do I have play (but that moves the whole system all the way to the steering wheel). Ive also noticed the rubber/bushings are quite worn - 201,000 miles. The passenger caliper has a slightly higher drag then the driver (but before you scream caliper, remember, it pulls to the driver not passenger).
I need to know what to check from here. I am by no means a mechanic but I dont need step by step instructions most of the time. So shoot off any ideas you might have. TIA