Quote:
Originally Posted by BloodShed
It's true; this is only done on frameless door windows (such as most coupes). It started with higher class cars but is showing up on modern lower priced cars now.
Anyway, the main reason this feature is done is to deter theft. Because the window slides up into the frame when it closes, it seals the window. On frameless door windows that do not have this feature, it is possible to shove a wedge between the glass and the door frame. This could provide a few inches of gap to allow someone to disengage the door locks with a tool. Locksmiths often use this method on frameless windows.
Video of this:
http://www.expertvillage.com/video/2...tools-long.htm |
I disagree with you. The main reason for this is because if the window didn't lower it would keep rubbing the door seal, causing premature wear and tear. It has to raise into the door seal to form a tight bond to prevent excess cabin noise.
The feature has nothing to do with security. A thief will either cut the door seal or just break your window.