anything on the exterior, painted metal, plastic (fender flares) glass, I'd coat.
I'd do all the door windows, roof, and mirrors. I personally don't like ceramic on windows with wipers because it can cause the wipers to skip and stutter over the glass. I will sometimes coat the top of the rear glass, just under the spoiler, as that's an area that can collect dust/dirt easily.
The shop that did a professional Ceramic Coating on our Raptor (CeramicPro) did not use that product on the windshield. It used some other product whose name escapes me atm. That may have been the reason. The vehicle I did myself has ceramic coating on all windows, but its been out in the rain exactly once in the past year and that was very briefly.
Yea - I believe a lot of ceramic coating brands have a more specific coating for glass. I don't have a ton of experience with any on my windshield, but from what I've seen online it's not really worth it to pay EXTRA for it (if it's included for free, sure) since they don't tend to last a very long time if you use your wipers a lot.
IIRC, the guys at AvalonKing tell you to go ahead and use it on windshields, just be aware that it will wear faster. Wipers are probably the reason as you’ve said. The question is whether it last significantly longer than RainX and this is more cost effective? I’d rather doubt it for most ceramic coatings.
I would not recommend doing the glass. You should do a paint correction before applying ceramic to give it the best chance of lasting 3 or so years. Also be very careful applying and following the directions. Work with small areas at a time. If you leave a large amount of the coating in an area and it cures, it will have to be buffed out to remove. If you want to do something quick and simple use a spray on product like liquid crystal which lasts about 6 months.
Maybe use a DIY ceramic on the black trim? Avalon King at the like. Or a spray-on coating carefully applied. Ceramic doesn't last as long on windshields. If you're going DIY you could do it on all the sides and rear or just go RainX for all of the windows.
Looks like the expel Utimate PPF did the best .
After a bunch of research that I did and my favorite local detailer did on his end, we ended up going with System X Max because of their lifetime warranty. My detailer became a certified installer because he was so impressed with the product after testing it on his own vehicle.
