Just before Xmas my aircon decided to pack up. While I've been waiting to have it fixed (tomorow thank god) I've been driving with the Windows down alot more often. I've discovered a noise that comes from outside the vehicle, passenger side, when I go faster then 30kms. It's like a ticking sounds, like something is spinning and tapping on something as I drive along. It's not very loud, but very noticeable. When the car was in being diagnosed last week for the aircon, they said that they couldn't find anything under the car while it was up on the hoist. They are going to have a more thorough look tomorrow, I was just curious if anyone else has come across this sound. I'm fairly certain its coming from either one of the wheels, although I had my rear tyres replaced on Tuesday, or somewhere under the car. I'm also fairly certain its not coming from the motor.