Today i had a great day in the car, but annoyingly, despite a thorough clean and blast with the pressure washer, the squealing returned! Brakes weren't even hot, it was so loud and happened when just driving at around 10 to 20 MPH. Thing is, a few minutes later it would stop, then start again. Does the fact that it comes and goes help solve what the noise could be? Surely if it were a bearing, it would be noisy all the time?
Was a bit embarrassing at times, considering how many people were all over the place!