Re: Annoying screeches from brakes
Need to grease the caliper and another round of proper bedding.
If pads were replaced recently, go back to workshop and insists that they remove pads and re-apply liberal amount of high-temp grease on the shims, calipers and clips. Avoid grease on the pad surface.
After that, find a safe place for bedding. ...Tuas or stretch of road from ECP to Changi Village....forgotten the name.
Accel to about 80 km then brake (70 to 80% pressure) to slow 20 km/h then repeat. Do about 10 times. Then drive slowly to cool the pad for about 5 mins. Do another 5 times. Excessive bedding will lead to disc warp....so allowing disc to cool after first round (10 times) is very important.
You will realize 1 or more discs has slight purplish streaks but thats okay. This should take care of the squeal.
I had exactly the same problem. Talked to many enthusiasts, in most cases, a shoddy job from workshop and improper bedding for performance pads. The mechanics don't understand the importance of applying liberal amount of good quality high-temp grease to prevent squeal..... They thought the anti-squeal (sticky adhesive) on SHIM is sufficient. THIS IS WRONG. Both anti-squeal and liberal amount of grease are needed......
So far, it has been 2 months after I have re-bedded and re-greased. Squealing hardly heard or too soft to hear it. I should say, 90% reduction. Happy driver now...
If your workshop refuses to remove the pads for re-greasing, you can buy from DIY shop White Lithium Grease in spraycan. Using a small red tube as nozzle, spray generous amount of the while grease on the calipers and grooves. Small amount of grease will get onto the disc or pad surface but that's okay. Drive around slowly to clean the grease off the discs to bring back the bite. Now, go bedding...... Using white-lithium grease is quite unsightly.....due to the white color some cleaning up is required. This method cannot be applied to Performance multi-port caliper because its concealed.
For me, I feel that squeal is 50% due to improper bedding and 50% insufficient good quality high-temp grease.
Happy Driving with Safety in Mind.....