I'm coming up to my first 12 months of owning my bike and really enjoy it. But everytime I wash my bike the brakes squeal for a few week. Then when I wash it again the process repeats itself. I have even tried just using a dry rag to clean the rims with no cleaning items at all and still get this this awful squeal for weeks. I wash the bike with muc off. I dry it then when I go out it squeals like mad. Being new to riding I was wondering if anyone can shed light on this to stop it happening, or is it just the norm for cycling?