I don't know if the bearings are bad or not but it sounds like you have have the wheel out and pounded on them some? If so, they need to be replaced, they also show interesting wear and the brake disk shows odd wear. What is the history... I came late to the party...
As to the comment about the thickness of the brake disk, I have a feeling that the standard 4mm, grind to 3mm and replace at 2mm applies to all the discs because my P250 sounds about the same. I measured 3 dimes in the office today with a ruler (not perfect but close enough), I come up with right at 3mm for 3 dimes. The US Mint website lists dimes as being 1.35 mm thick but these seem thinner than that. Nickels are shown to be 1.95 mm thick so two should be almost 4.0 mm thick, same as a new disc. My nickels measure right at 4 mm when I stack two of them.
So, Rhianna, if your disc is as
Thick as two nickels, it is almost new.
Thick as one nickel, needs to be replaced.
Thick as 3 dimes, It can be re-surfaced at a machine shop.
Easy, cheap way to tell using no tools!
