u/JamesB2111

Hi All,

I'm hoping someone else will have run into the same issue as me and can provide a recommendation for what I can do. I regularly clean my 2009 525i SE and whenever I do, there are always these big white marks all over the bonnet.

My thinking is that it might be sun damage but when cleaning it, you can see the marks slightly starting to clear up if you really scrub them but it's not possible to fully get rid of them. Has anyone else run into this before and know what it could be?