Nanoskin SPEEDY BRITE Pro Grade Wheel & Tire Acid Cleaner, 16 Oz. - Chrome & Coated Wheel Safe, Cleaning with Organic Acid | Removes Brake Dust & Road Grime for Auto Detailing, Body Shop Safe

+Works to remove hard water from car paint+Probably cleans lots of other mineral stuff too+Seems less stinky, dangerous, and evil than many acid cleaners-still an acid cleaner, so be careful-spendy for a small bottle-crappy sprayer headWork better on hard water spots on car paint than any of those home remedy wive's tales that don't work, and seems less evil and stinky and dangerous than the normal acid cleaners. It might not work as well as those, but I like to use the mildest cleaner that does the job. Does not seem to harm the paint. I haven't used it on glass or any other surface. It is still an acid cleaner, so be careful. It was expensive for a small bottle, and I had to replace the crappy sprayer head on it, but it is the chemistry we are buying here, right?

This was the perfect wheel acid for my needs. Weak enough to use without worrying too much about damaging my truck, and I didn’t have to buy a gallon of it.My 2018 f250 had some serious hard water stains on the glass. The 4:1 ratio is no good, does nothing. But dabbing right out the bottle on a small rag and putting some elbow grease into it took the water marks off the glass, the mirrors and even some light marks off the roof paint.If you want to take heavy water marks off the paint, this won’t cut it. Too much pressure and rubbing will damage the paint. But for glass it works just fine.

It's a good grime/residue cleaner. I purchased 2 bottles to clean up kiln glass. It would have gotten 5stars But, on BOTH bottles the sprayer has an issue. First bottle, sprayer stopped working half used. Second bottle, it never worked! Come on! I had to buy an additional spray bottle, just to use it.

arrived with cracked nozzle, losing over 60% of the fluid. Intended originally to spray over the rims of my E350. For safety reason, let the rest of the fluid to drain out.

I detail cars for a living. This product works great on rims (but not the tires). They recommend that you dilute the product with water 4:1. However, I just do 50/50. Of course, with any acid cleaner make sure you test a small area first to make sure there is not a bad reaction. Spray on, wait 30 seconds and hose off. No need to agitate with a wire brush like with Sonax or similar. If you have the "courage" to use an acid based cleaner, this one works! Personally, I have not had any problems with it. I use it 95% of the time, and if a rim is very, very old or some funky brand made with strange looking metal, then sometimes I use a different product.

Brake dust can be stubborn to remove. This works well and rinses off with water. The only downside is the acid destroys the spray head before the bottle is empty. Transfer the contents to a spray bottle with an acid-resistant spray head (Chemical Guys sells them).

This product is absolutely amazing! It is not for the faint of heart. This stuff is the horrible melt your skin off killer awesome working stuff of old. It took off that gold iron flake that was baked on for years. It took the brake dust right off. The wheels are nice and shiny.It works way better than the chemical guys product, decon pro iron remover, but you must wear gloves when you're using this stuff it will kill you and it will remove the paint if you leave it on too long.Oh, and one star off because the spray bottle sucks. It didn't work the first time I used it.

Stripped off grime and oxidation without any scrubbing at all. Just sprayed on, hosed off. Effortless and wheels look new.