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Old 12-01-2019, 12:03 PM   #1
Notaligned
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Join Date: Apr 2018
Location: Europe
Posts: 94
My Ride: 328Ci
Powder coat failure on style 44's

I had style 44's powder coated last April.

1: I waxed them monthly and cleaned them with neutral pH soap exclusively.

2: After only 3 months and only 1000 miles of summer driving (no snow not once, no salt on the road) they developed what looks like "spider web" cracks all over the finish.

3: In places they also developed yellow "tiger spots" from what looks like brake dust eating into the finish. It can't be cleaned even by professional detailer chemicals.

It's really hard for the camera to pickup the "spider web" cracks, but in sunlight they are very visible:


There is only one shop that does it, there are no other options, they have no competition and I guess no drive to improve. Ironically I paid extra money for the clear coat top coat as "extra protection".

Is anyone experienced with powder coating? Any guess what they could've done bad? Cheap material? Bad preparation? What can I tell them so they don't just use the standard excuse "you must've washed them with something aggressive".

I won't pay for powder coating every driving season, that would be absurd. Yearly sandblasting and oven heat are surely not very good for the aluminum anyway.
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