I have an 06 reg 147 JTDm which has developed a noise which is beginning to get on my nerves. It comes in the form of a hihg pitched squeal from the near side read wheel and is intermittant (occuring every 2-3 weeks and lasts for the length of whatever journey it starts on regardless of how long) it pulsates from inaudible to really loud and seems worse when turning right i.e on roundabouts but disappears on left turns. Now my thoughts are as follows:
Some sort of material trapped on the pad or disc which moves slightly when turning. Why does it go away though?
Low brake pads (have the rears got wear indicators?) but they seem ok looking at them. Again why does it dissapear?
Wheel bearing, dont really believe this as i've had them go before and this sounds different
Play in one or more rear suspension bushes which may explain the difference in sound on corners. This is my personal favorite as the sound seems to go under certain weather conditions and if the car is used more frequently. If it's wet/cold it seems to not do it so maybe the water lubricates the squeaky one? or the cold shrinks it?
Any opinions from some of the experts on here as to what this may be, or wether it may be unsafe, particularly if it's brakes. I should add it brakes fine and in a straight line, and the handbrake is good?