Mr. Incredible
G80 gone, still a Hyundai owner. 2021 Palisade
- Joined
- Jun 6, 2018
- Messages
- 3,468
- Reaction score
- 1,745
- Points
- 113
- Genesis Model Year
- 2018
- Genesis Model Type
- Genesis G80 Sport
Oh...I always dry after a wash. I am more worried about rain hitting the car...then leaving wet marks on the dark chrome. That's why I was say...wash + dry...and then apply a preventative (hopefully not every time).
Last thing you want to do is to polish those parts every time the car sees any sort of precipitation...LOL.
rain is a lot more pure water than tap water, spots aren't likely to be an issue with rain, tap water is filtered, chlorinated, and contains a lot of calcium, magnesium, and lime which is what gives it the hardness and leaves water spots.
rain for the most part doesn't do this, while it does contain particulate matter from pollution, it isn't classified as "hard" water. water tests I have done at my home show my city water has a hardness rating of > 10.5 (very hard) and rain water has a rating of < 1.
we do a series of water tests every year as we have a grey water reclamation system and a tankless water heater, and both require the hardness to be below 1 for their warranties, so we soften and filter to get it below 1.



