Hi,
I don't feel it is a concern, but at the same time, I've never seen it before. The idea that it is white could indicate a few things. For example, driving on a damp gravel road. Something of an oil base has mixed with oil, or since the vehicle is new, it could be grease from production.
If you wash it off, does it return? If it does, I would recommend having a dealer inspect them to see what it could be. It looks like the dust cover at the rear of the rotor is white as well.
Let me know your thoughts or if you have other questions.
Take care,
Joe
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Sunday, December 11th, 2022 AT 8:33 PM