A8CT

laurent0613

BruceLeroy1984

I've had my D4 for 4 years now and have no complaints about the pano roof.

Twglasgow

Jibsymalone

Mine (pano)whistles above around 65mph, which can be annoying until I turn up the stereo...

I will get it taken care of one of these days...

MP4.2+6.0

S8 has the std. (short wheelbase) roof, but no mechanical issues there. On D3 sunroof (pre-pano design), only issue over life of car has been the motor that raises and lowers the wind flap. Replaced it myself. Closing the sun shade reduces noise at highway speeds some, both on the D3 W12 and the D4 S8. Both already have acoustic glass too, so are generally very quiet compared to most vehicles.

Q5 has pano roof--somewhat more wind noise, but that is a more upright SUV design, has roof rails (no crossbars on ours) and is a generally cheaper B8 A5 design take off.

For roof heat, from having first done it on a pano Mini S, then the Q5, and more recently my std. sunroof D4 S8 and a Golf R, you can just get it tinted some if it is an issue in your climate. I used 70% (30 percent light reduction) high performance ceramic type film, which reduces the IR heat load about 50%. 3M Crystalline specifically. Went from feeling summer solar heat on my arm or thinning head to nothing. Darkening the roof a bit more made it easier on my no sunglasses eyes too.

TinyElviss

That's great news... I've been thinking of tinting my back window to reduce the baking effect, and will now add the sunroof to that. I believe 3M Crystalline also comes in a nearly-clear product to keep up with light reduction laws in some (including mine) states? The only thing that has stopped me is the potential for distortion when looking through the back glass.

Jibsymalone

I also had my windshield tinted with a "clear" ceramic tint to help cut the heat load within the car even further. It did make a difference, and you can't tell it's there at all...

MP4.2+6.0

I no longer tint back glass due to that distortion nighttime headlight beam diffraction from the defroster lines etched to the glass. Had it on my D3 and definitely noticed it. To get the same or more overall reduction effect I tint sunroof--especially on a pano with large surface area and flat surface. Back glass is also expensive to tint if you ever get it quoted separately--both general hassles working back there and the complex curvatures that takes more labor time to shape it correctly with the heat gun techniques.

I have used Crystalline 90 on one front window application, but otherwise use the 70. Some use it for front windows where they want tint to be hardly noticed. There is so much light from the sunroof in general, that honestly you don't notice much overall difference in appearance looking out. At first I was worried about that given glass already has the noticeable factory tint, but found the incremental difference small. I could almost argue for using their 50 frankly for it from my own results. I think 90 is used primarily for windshield tinting, which in CA is a big no no. I end up replacing most vehicle windshields I own once or twice anyway, so too much $$ there even if I could get past the other concerns there.