on my 01 rio, the aerodynamics of this POS is garbage. even if i put on the washer fluid and wipe it off with the wipers, i get fluid on my arm (with the driver window open). design was a crap shoot with them. all they ever wanted to do was make a simple and economical vehicle. besides, it is a cheap car, i say this with the word cheap instead of inexpensive, since the quality has never been there to begin with (they use mazda components, how much quality can there be?)
dont worry about the air noise, it only gets worse over time. as for trying to quiet it, go rent a wind tunnel and see with a smoke trail where the wind breaks up the most, that will be the culprit.
enjoy

 

Get a piece of rubber tubing. Have a passenger sit there and put one ond in their ear and use the other end like a stethescope. Any air leaking past the windshield seal will scream in the end of the tube. You might have a bad gasket. Don't limit the check to just the front. Check the side windows and doors as well. The water on the arm is common to alot of different manufacturers. Good luck.

 

re: water on the arm

I've had 2 Geo Metro's and one Chev Nova in the last 10 yrs. All gave me water on the arm, has to do with no lip on the side windows. Dah maybe better air flow & better gas milage because of less air resistance. If you don't like the car trade it off.

 

My 2002 rxv does this also.It only does this if your above 110 kph with a crosswind.It sounds like its coming from the vent on the dash.I just turn the radio up.I have two friends that have rios that dont do this.I think it has something to do with the roof rack vibrating.

 

my 02 Rio Cinco does that around 70 MPH and I don;t have the roof rack... I think it has something to to with the passenger window because if I force the crank to turn, the noise does reduce a tad

 

My 2001 Rio has a tendency to make noise from the passenger side window when the wind is just right.

I took care of the problem with a bigger amp.

 

my 01 rio dosnt make any sounds like that, and I drive 85-90mph all the time..

 

my 03 rxv is silent all the way to 225km/h (135ish mph)

 

my 2002 does that only when its windy

 

Mine was doing this alot yesterday on the way home from work.I reached over and pulled in on the door handle and it quit for as long as i hung on.Pushing out on the top of the window did the same thing but created a lot of wind noise.When i have some time I'll try adjusting the bottom of the door in and see if that helps

 

My wife put her hand up to the seal along the edge of the passenger window and the
noise seemed to reduce. That's at about 65mph in a 2003 Rio.