i have a cupra r an have a few problems i was wondering if anyone could help..... the 1st problem happens ramdomly when i have been driving an i go to reverse there is a big squeeking noise that sounds a bit like something binding could this be a sticking calliper or the lips on the disks causing ths noise....... secong thing is when people sit in the back off my car there is a horrible squeeking noise when gettin in these noises make the car sound ****...... SOMEONE PLEASE HELP.........