I have just had a larger 4-pot brake kit fitted and although they operate smoothly as I apply them hard they give off a loud squealing noise until the car stops it is so loud that my Impreza sounds like a steam whistle from a train .
The pads are Mintex supplied without backing pad is this the problem or will the noise reduce when bedded in?

 

It'll probably be the Mintex pads, they are notorious for squealing

 

I had this with Mintex pads, until I fitted some anti squeal pads, also made by Mintex.
Alcazar

 

who's brake kit and what spec mintex pads???

noise can be caused by a number of things, could be the pads, maybe they are not bedded, mismatch between discs and calipers, frequency conflict with upright/strut......the list goes on!!
manufacturers spend millions to solve these problems.........
alyn - asperformance.com

 

Thanks for the replys I will give it a couple of hundered miles to see if they bed in then change the pads for something I hope will be quieter!

 

no sh*t i have same problem but with the 2 pots got them fitted last week with the service and theyve done nothing but squeal but only on light breaking heavy breaking then they dont.they are mintex to with black diamond drilled and crossed discs they are getting on my nerves old pads never squealed:P

 

They smoke like a trooper

 

Phoned Mintex on Friday and they were very helpfull I recieved some self adhesive anti squeal pads (FOC )which I fitted this morning and the problem has now been solved...(THANKS Bev @mintex)