What's the sweet spot (%) for UV protection/keeping the cabin cool and not making the cabin too dark?
I just moved to California and it's become a hassle with my DD. It already has a black interior and I don't want it to feel any more cave-like. But even with propping a couple windows and putting a sunshade the interior is so hot when I return even from 5 mins at the store.
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Former
-2008 E90 328 black/brown
-2012 Lexus IS250 black/black
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