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San Diego, Phytonic Blue with Oyster interior. I found no need to do any further tinting to widows or roof. I set the air conditioning at around 72~74 and it's quietly maintained even during the hot sunny part of the day.
 
Jai
San Diego, Phytonic Blue with Oyster interior. I found no need to do any further tinting to widows or roof. I set the air conditioning at around 72~74 and it's quietly maintained even during the hot sunny part of the day.
Curious to know if you have already traveled in hot days.
I had sunroofs on 6 cars (vw, audi, bmw) and use sunshade all the time in summer as it becomes impossible hot for me and also front / rear passengers.

is iX sunroof that much better stopping heat than a normal sunroof (eg an X5), which are also tinted / uv filtered from factory)?
 
I don’t see a need to tint the roof. It doesn’t;t even get hot to the touch sitting in the sun with the tint mode on and it doesn’t let enough sun in to create shadows inside the car. It’s much more effective that sun shades on the teslas. I thought it was a gimmick until i rode under it for a few weeks.
Did you already made a trip with passengers in very hot day?

do you have any term of comparison of the level of heat blocking between the IX and a normal sunroof (eg an X5)?

In all of my other cars I always used the sunshade in the hot days of summer.
 
The PDLC actually works pretty well for filtering heat/light in the car. I added 50% XPEL ceramic just for those rare days here (100F +) that really need it (or on the road in AZ!), and mainly as a UV filter, but you could likely leave as-is and get pretty good thermal protection I expect, which jives with other users' experience. Just had one summer with it so far, but the cabin seems to be fairly easy to regulate between preconditioning and tinting. I did notice the windshield IR protection seems excellent (leather dash), although I got a Covercraft sunscreen if I need to park outdoors somewhere for an extended period in full sun. In another life I was an industrial chemist with Dow Corning, and worked briefly with a very large team assigned to Lockheed developing thermal protection for the test bed that would later morph into the Space Shuttle, so have some familiarity with the physics of glass, but know very little about BMW's product or process for this particular glass, although it seems almost identical to commercial applications of PDLC/tinted glass, which has been used for decades for building insulation in all climates and regions with all kinds of glass.
 
I am not tinting my glass roof but will have it covered with a single piece of clear PFF (such as XPEL) to help reduce the rock chip cracking some have experienced.

Question please of someone with an iX now: What would the size of that PPF need to be? TU.
 
I live in California, a sunny state and expect to get my iX after the current stop sale.
While I heard manufactures already did a good job on preventing ultraviolet and infrared ray coming into the car, I want to see if any one further tint the front/rear window & sunroof just for heat rejection purpose, and how you feel about the temperature difference after tint.
Tinted driver and passenger 30% with an IR film and 20% for the back passengers and boot. Do not apply tint on the sunroof not advised by BMW

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BMW Group has not advised anyone to tint - or not - their sunroof, or windshield or side windows, on the iX or any other models they manufacture, in any written or verbal communication as far as I'm aware. Ever. A dealer - or a detailer - may have advised someone not to tint their windows (or sunroof), mainly because of their lack of knowledge about their process or their product, or because they may have damaged someone's window in the process of applying same. Tinting - or not - is a personal decision based on 1) esthetics, 2) legal restrictions or 3) need. There's really no need to tint your windshield, for example, because it's safety glass (with a sandwiched layer of polyvinyl butyral between layers), and it already has a very effective IR coating, so it rejects almost 100% of incoming infrared and UVA rays. For esthetics, perhaps, if you want a darker windshield, but in the US tinting your windshield below a certain area (generally about 4" below the top) is illegal. Tinting your sunroof with a suitable tint will reduce visible light transmission and some heat (the layered electrochromic glass already rejects most UVA), and your tempered glass side windows - even the factory-tinted rear passenger windows - have almost no UVA rejection so tinting these will substantially reduce transmitted energy.

Any window glass can be damaged by the application of tint by a sloppy detailer, and a small chip or crack can propagate in tempered glass (all of your windows except your windshield - the sunroof is layered tempered glass). Window glass can have manufacturing defects that only appear some time after installation, and cause an ultimate failure. But none of these are related to tinting, and thousands of cars, including the iX, have aftermarket tint applied pretty much everywhere, with no verified reports of failure related exclusively to tinting, after several decades on the roads collectively.
 
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