BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Wash, Wax, Detailing and Cosmetic protection/repairs > Rust forming all over my car? What gives

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      03-31-2013, 01:33 AM   #23
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like what people said...iron x and stop at that or if you have time. Iron x, clay, Meg's 205/105 then seal
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      03-31-2013, 03:26 AM   #24
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Nano auto scrub. It is like a 10 min complete clay job.

It hit the car with that then follow with Swissvax cleaner and polish.
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      04-01-2013, 01:30 AM   #25
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It could be rail dust but not likely. It's brake dust. Every car should experience this, it's just easier to notice on lighter cars.

Rotors are made of iron, when you wear the rotor down the little dust particles of iron attach to the paint and rust when it rains or you wash your car.

You will probably notice there was little to no spots on your front bumper. Your side and rear bumper will have lots of spots because the air will carry the particles past your vehicle as you are driving.

Noting you can do except keep you vehicle waxed which will reduce this or just keep a bottle of ironx like others have said.

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      04-01-2013, 09:51 AM   #26
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iron x and then clay it
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      04-02-2013, 06:26 AM   #27
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Rust Spots

They are usually caused by metallic brake dust that has penetrated the paint film surface and water / acid rain has produced rust. It can be removed with a decontamination product (ValuGuard) followed with a pre-wax polish/cleaner and a surface protection re-applied.

They should be removed as soon as it’s noticed as it may permeate under the paint surface, causing the paint to 'bubble' if this should happen the affected surface should be treated with a suitable rust inhibitor to avoid the rust contaminating other areas

Brake dust or rail dust is very small, almost microscopic particles of steel, iron or their alloys. These particles carry a positive charge (due to friction) while the vehicles they land on are carrying a negative charge. The vehicle surface becomes a magnet, attracting and bonding the ferrous metal particles to the vehicle’s paint surfaces.

Relevant Articles from TOGWT Autopia Detailing Wiki

1. ValuGard Paint Decontamination System” – http://www.autopia.org/forum/autopia...1242-valugard- aint-decontamination-system.html

2. “Nanoskin Surface Prep Towel” – http://www.autopia.org/forum/autopia...rep-towel.html

3. “What will decontamination remove that washing / clay will not? “ - http://www.autopia.org/forum/guide-d...-will-not.html
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      04-02-2013, 11:05 AM   #28
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+1 on the brake dust diagnosis. I've seen it many times.
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