hi guys,i know this thread is a bit old but ive got the exact same problem i must admit i only noticed it recently after i had the recall done on the brake cable,at first i thought it might be related but my dad told me it was proberbly just a stone stuck behind a brake pad,ive just traveled to wales and back with the the family and on the way there the screeching was really anoying,it isnt the rear bearings as ive just had them both replaced,and the funny thing is on the way back i didnt hear the noise once,it seems to be intermitent,could the boot being slightly open really be the problem ,can somebody explain this to me please or offer any other advise on what it could be,many thanks