so i get in my car tonight and i start driving and i hear this high pitch whistling coming fromt he passenger side footwell. the pitch will get higher as i accelerate more. so i thought it might have something to do with my sound system so i turn up the music but i can still hear it. so i test my speakers with the fad/bal. and it seems the front passenger speaker is out.

could a bad speaker do this?
also what are the size of our speakerS?

 

I have the same problem.
Its the rubber mold. It gets kind of flatten and, it doesnt put enough pressure onto the glass window to seal out the wind anymore.
I tried to lookup the parts in hoping to replace it. But the damn thing is like $250!
I said F***it and fixed it instead.
The way I fix it is this, if you observe the rubber mold, it has like a pouch.
I bought a small, long rubber hose and stick it in the pouch like a shim.
Now it puts more pressure on the window, enough to seal off the wind.

 

im 100percent sure its not the rubber mold
cuz it happens when im in idle and now my stereo system doesn't work. all i get is like a high pitched squeal from the speakers. kinda like a dog whistle.