[Honkeytonk Monkey]

When I ran into this problem with my 1996 Contour I took all the screws out and used some pieces of rubber cut into circles with a hole in the center as washers between the parts. It Eliminated most of the squeaks in the doors. As for the wind noise from the mirrors and handles, none of those parts are air tight from the factory. Face it this is an economy car not a Mercedes S Class. Cut some thin strips of dynamat, or similar damping sheet, and place it over the areas the air is coming in from. cut a hole for the wiring, bolts, etc that need to move freely. Make sure the piece of material is flush across the opening. The wind noise should be gone from the doors aside from the drag the handles produce. For the mirrors, just take them off and look at the piece of foam ford has in there. That's your answer to why they are so noisy, that stuff is useless. "Dynamat" this surface as well then replace that foam. The foam absorbs sound but does not deflect it or absorb any vibration.

Just be glad the Focus is more well made than the Contour was. My 3 year old 1996 Contour received it's first audio system in 1999 with 45K on the odometer. A 10" Clarion sub, a PG QX2180, a CDA-7838, and alpine 6.5" coax door speakers. I wasn't sure what was louder, the ratlles buzzing or the system. I'm close to four years in the ZX5, 88K, and a much harder existence, and the car is still fairly rattle free even with everything I have in the car now, including a 15" sub. My windshield physically moves with the music alot of the time and everything is doing fine.