On Saturday, my BRZ developed a rattling noise. I first thought it was from the rear deck but now I believe it may be from the driver-side rear wheel well.
These are my observations:
--This noise is only present after the car has been running for at least 25-30 minutes
--Once it begins, it is occurs in any gear, at virtually any speed above 10 MPH, and does no matter whether I am in neutral or not, or whether or not the clutch is depressed
--The sound changes when going over bumps
--The sound appears amplified when making both right and left turns, but especially right-hand turns
--The sound changes in pitch and slows in intensity/frequency as the car slows (see video)
--The rattle was present on both Saturday and Sunday – it may be coincidence, but both of these days the outside temperature was about 65 F, and this is the warmest the outside temp has reached during the time I have owned the car
Unless I am missing something really obvious (which is completely possible), presumably this will mean a trip to the dealer, but having some idea of what it is beforehand (from both a time perspective for repairs and knowing it is OK to drive to the place of service) is always a plus. Could this potentially be a pebble lodged between the disk rotor and the metal guard behind it? Many thanks!