It usually is the bolts holding the glass to the regulator are loose or the regulator itself. You need to remove the door panel to check, other possible cause(older car) is the rubber guides can be torn.
The car rattles when I go fast in it.
A rattle, or rattles.
c
check you ty rods and shocks.
The JL Audio Stealthboxes are designed to minimize rattles in your car. I would suggest installing it then addressing any rattles then. We sell Hushmatt that has a higher heat adhesion factor than Dynamat. Here is a link to the products. http://creativecaraudio.net/c/car-audio_accessories_sound-proofing-material
Maybe Its The Muffler or the pistons hitting the engine
no they do not have rattles
The Rattles was created in 1960.
It is comin in forrin cars when they get old and if your car is doing that it means that you should probaly take it to be looked at!
It means you have a ladybird on your car window.
What kind of car?
when the vehicle is parked they are raising the motor, Or when passing by it rattles the window