Hi, My Vitz sometimes start giving Kat kat sound when i break. Especially jumps like Bahria or PWD Road, it starts giving Kat Kat Kat sound. I have changed its brake pads since mechanic suggested it might be cause.Although toyota person in its inspection had told that these pads are ok but since mechanic suggested that it is cause of sound so i changed it. Original toyota Pads he charged me 4400 and mazdoori 800. He did tooling on front and back wheels which costed 700 for front wheels and 600 for back wheels.
Overall after doing all this, Still that Kat KAt KAt sound hasn't gone. Now i am suggested by someone that suspension coil of back wheels might be the cause. Some plastic think under the spring might work. Anyone suggest plz.