Almost all wind noise complaints involving automobiles are caused by air escaping from, not entering, the vehicle.

Just as when an aircraft moves through the air, as a vehicle moves, it pushes air away from itself. This action starts when its' forward surfaces push against the air it encounters. The air at this forward location is a positive pressure zone. This air is pushed upward, downward, and to the left and right. The majority of the vehicle's surfaces are subjected, as a result of this action, to less air than when the vehicle is standing still. These high and low pressure zones, created by motion, result in counterclockwise and clockwise swirling air travelling down the vehicle's sides. As a result of these actions the interior air pressure begins to increase in relation to the exterior air pressure. As a vehicle increases in speed, the inside pressure continues to rise. The heater/air conditioning system will add to this action while in usage, again increasing interior air pressure. As the air pressure on the inside surfaces becomes higher, it will escape through available exits. Vehicles are designed with vents for this purpose, and their locations are of significant importance. Advantage is taken whenever possible to locate these vents at a distance from the vehicle's occupants, as noise tends to occur as air flows through them. Vehicles are also equipped with seals on door, trunk and window openings. These seals, although generally thought to be water seals, are in fact atmosphere seals and are installed to stop or slow down the escape of air. The choice of seal type (stop or restrict) is chosen depending on location and actions of related automobile parts.

Generally speaking, in the case of an unwanted wind noise, a small undesigned opening can produce a very loud noise as the large volume of air inside the passenger compartment attempts to squeeze through a small space. The velocity (speed) of the air travelling through such body-faults can be significant. A small opening will identify itself by producing a high pitch noise or wind whistle. As the hole size increases, the pitch of the noise decreases, so that a large undesigned opening will produce a low pitched noise or wind howl.

Almost all vehicle wind noise complaints are the result of pressurized air exiting the vehicle.

At LEAKPRO® we use equipment to simulate the air pressures found in moving vehicles without the need for actually moving them. This allows for the safe, accurate diagnosis, and repair of vehicles.

We are the LEAK PROs! We have fixed thousands of wind noise problems successfully.

All LEAKPRO® technicians are trained by Ford, General Motors, and Chrysler Motors LLC, and have the latest technical service bulletins and updates, and use state of the art equipment to pinpoint the source of the wind noise exactly. This saves time, and YOU money.

We use O.E.M. approved products and warranty the repair up to LIFETIME.

We are recommended by the manufacturers. That is why we have grown to be Canada's largest Automotive Wind Noise Repair company.

Call today before it is too late.

Video Links

Wind Tunnel Testing of Whispbar Roof Rack

New Volvo Wind Tunnel Reduces Emissions and Fuel Consumption

Ford Flex - why it's so quiet