
Spotted these marks in a few different spots on two of my wheels, however always in the "V" of a spoke. Wheels were flawless when purchased. Its on a BMW, so brake dust is abundant, but I keep the car very clean, washed weekly.
I wash the wheels while cool, usually rinsed first but on occasion I've applied Sonax while the wheel was dry. Never let dwell longer then 3 minutes.
I've tried some elbow grease and soapy water, and tried clay once without any improvement.
Planning to stick with soap and water from here on out.
Your thoughts please on.
1. Is it due to Sonax or brake dust or both?
2. How can I make it go away?
Thanks