197: light screeching while driving :/ brakes & pads?

when im driving with windows down i can hear a light constant screeching noise, would that be the brakes or pads? or something else?
 
Prob just need stripping down and cleaned.You may have picked up a stone or anything
 
Don't go changing them straight away, check them first.

I've got a brand new 200 and my brakes are screeching due to the warm, dusty weather.

Check them first.