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      11-03-2018, 06:19 AM   #21
TheRealBob
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Drives: '18 Bluestone M5
Join Date: May 2018
Location: North Florida

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Quote:
Originally Posted by visualguy View Post
The amount of rust on the F90 M5 steel rotors after washing is unbelievable. I've never seen anything like it. Rust everywhere - not just the front surface. When I drive after washes, copious amounts of rusty water drip on the wheels. It's crazy. After driving and applying the brakes, the rust is removed from the rotor surface, but it's still in the drilled holes and on the sides of the rotors. It just looks bad.
I had thought a product called Hyde's Rustopper might be the answer, but I've read some reviews that say it doesn't work well with drilled rotors. I have no idea why. If anybody has experience with the Hyde's, please share your thoughts.

I guess a drive right after I wash, is the only solution to the pads rusting to the rotors.
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