have to slam door to close

[Aero_JT]

In my Audi, the window on the door that is being closed drops slightly when you open it and then goes up after the door is closed, thus releasing the air pressure as the door is shut. I've never paid attention when in a BMW or Mercedes, but I'd imagine it is the same.

Regarding windows dropping on certain cars when the doors are closing, I have seen it in a few cars and brands.

From what I remember, those cars that do it have doors that have no "upper" window frames. Not sure if it's regarding releasing air pressure, reducing impact/vibration on the windows, or for some other reasons.

This might not apply to all doors without upper window frame. However, I can't recall seeing any door with full window frame does it (the slight window drop and lift).

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[shokker70]

I think y'all have all been smoking rope. If anything, a JK or JT should be the absolute opposite of this. Maybe it SEEMS this way because it swings free? Especially with a soft top, there is no pressure. I've always thought it easier, hard top or soft, and I've had a couple of each, to close the doors on my Jeeps. Maybe its the lighter feeling doors so folks assume it needs to be closed harder? A 2 door sports car will have a much heavier door than a 2 door Wrangler.

Maybe I'm the odd man out, but I've never felt like I've had to slam a door on my JK, JKU, or JT.

 

[NC_Overland]

I'm not arguing with you as your JT door may indeed need realignment, but your comment above is not true.

In my Audi, the window on the door that is being closed drops slightly when you open it and then goes up after the door is closed, thus releasing the air pressure as the door is shut. I've never paid attention when in a BMW or Mercedes, but I'd imagine it is the same.

That’s because you have a frameless door design. You must have an A5 or A7. The Gladiator has full doors.

 

[ShadowsPapa]

Regarding windows dropping on certain cars when the doors are closing, I have seen it in a few cars and brands.

From what I remember, those cars that do it have doors that have no "upper" window frames. Not sure if it's regarding releasing air pressure, reducing impact/vibration on the windows, or for some other reasons.

This might not apply to all doors without upper window frame. However, I can't recall seeing any door with full window frame does it (the slight window drop and lift).

No window frames? That's what used to be called a "hard top" design. Like the Camaro, Javelin, Mustang, etc. - hard top vs. "sedan" with window frames that surround the glass in the door, as far as car nomenclature.
"2 door hard top" is how you'd describe the cars I listed.
Others, like Gremlin, Hornet, Spirit, Eagle, have window frames on the door.
How about a 1955 Nomad vs. the 1955 Chevy wagon - could give a ton of examples.
For the frameless design - the window going down is more for the seal - when you close the door watch VERY carefully on an older car that doesn't do that. It's not to let pressure out as the glass flexing will do that. It's because the glass moves up into the seal when the door is closed.
Call it what you want, but as a guy who's restored countless "hard top" cars, replaced the window seals and gaskets and had to adjust the doors and glass on hundreds of 'em, on the older cars you roll the window down a tad, close the door then roll it back up to get the glass into the seal otherwise they are prone to leaking at the top.
If ever a vehicle needed pressure relief it's a vehicle with a full window frame! The glass moves enough to allow air to escape on the hard top or frameless designs.
Ask a professional body guy.

 

[jurfie]

That’s because you have a frameless door design. You must have an A5 or A7. The Gladiator has full doors.

Yeah, I realized that after the fact. I do have an A5.

 

[TheDerb]

Light and tight. Try opening the window. I bet it'll close easier. My JT did that but it has gotten a little easier over time.

This just happened to me on my ‘23. Obviously I came here first.

put the window down- closed like it should. great advice.

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