Centerlock discoloration
02-02-2018, 06:50 PM
#2
Yes. There is another thread on here with a similar pic where this was addressed by the membership. 
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catdog2 (09-14-2019)
02-02-2018, 06:53 PM
#4
hard water does this form what i heard
02-02-2018, 06:54 PM
#5
02-02-2018, 07:03 PM
#6
Rennlist Member
Yep, hard water. Permanently etches the surface. I had this issue with my 2014 GT3. Car was washed out on the desert, wheels were warm to hot with unfiltered water. Couldn't get it off no matter what I tried. I was tempted to get new CL bolt x4 but in the end just accepted it.
02-02-2018, 07:04 PM
#7
Drifting
^ This. They are anodized. Super sensitive to all kinds of things. Hard water, chems from the wrong cleaning solutions etc. I tried to freshen my black ones up (I'm the 3rd owner) and got them looking pretty good. They are not soft metal wise just easy to stain. I used baking soda/vinegar for the hard water spots, high end polishes and a tooth brush. They turned out pretty good since they are 7 years old. I ceramic coated them at the end. They just won't polish up like paint..
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02-02-2018, 07:11 PM
#8
I use turtle wax cleaner and use very little same thing I’ve washed cars with for about three or four years. They have also had lots of salt from the road. Same water( hard or soft who know). Had centerlocks before this car, all the same scenarios, except no oxidation The dealer said they would fix em or replace them.
02-02-2018, 08:12 PM
#9
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Yep, hard water. Permanently etches the surface. I had this issue with my 2014 GT3. Car was washed out on the desert, wheels were warm to hot with unfiltered water. Couldn't get it off no matter what I tried. I was tempted to get new CL bolt x4 but in the end just accepted it.
02-02-2018, 10:48 PM
#12
Citrus cleaners will eat away at the anodized finish, as well as a host of other products.
02-03-2018, 02:39 AM
#13
Race Director
I question whether hard water alone, after only 4 washes and 800 miles, would cause that kind of discoloration. Some kind of chemical etching from a cleaning solution seems more likely.
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Wakemaker (09-12-2021)
02-03-2018, 08:02 AM
#15
Race Director
Agree. I no longer use and of those "Wheel Cleaner" sprays before washing. I have Modesta applied and baked by Detailer and only car shampoo and water on wheels. I believe those sprays have way too many chemicals that are too strong