Hi guys,
I've just had my brake rotors/pads replaced with the zimmerman slotted and pagid pads. These were sourced from Paragon Products.
Problem is, there is now a loud squealing noise whenever the front wheels are spinning (up to 60mph) and it tends to be louder at lower speed. I know that pagids can be very noisy when braking but the thing is, the squeal happens even when I'm off the brakes!
I was advised by my local Porsche specialist to have the brake rotors replaced to the OEMs but reluctant to do so as I've only had these on for slightly over 2 weeks.
Does anyone have a clue what's causing the noise and how this can be fixed ?
Thanks,
Edgar
How many miles are on the car? You could have a caliper that is sticking a little. Is it just one side that is squealing or both? Also you might want to look at the temp of the rotor on both sides to see if the problem is on one side or the other.
Did you lube up the slides real good when you replaced the pads?
[quote name='banditsc' post='46579' date='Jan 30 2008, 09:36 AM']How many miles are on the car? You could have a caliper that is sticking a little. Is it just one side that is squealing or both? Also you might want to look at the temp of the rotor on both sides to see if the problem is on one side or the other.
Did you lube up the slides real good when you replaced the pads?[/quote]
The car's done about 80k miles now, and the noise seems to be coming predominantly from one side (driver's side). It does sound like metal rubbing and could well be the caliper making contact with the rotor as you've suggested. Is it possible for the callipers to be re-aligned ?
The noise is annoying me big time and I'll prob get my mechanic to take them apart and do a refit if nothing else works.
[quote name='chuaed' post='46638' date='Jan 31 2008, 12:56 AM']The car's done about 80k miles now, and the noise seems to be coming predominantly from one side (driver's side). It does sound like metal rubbing and could well be the caliper making contact with the rotor as you've suggested. Is it possible for the callipers to be re-aligned ?
The noise is annoying me big time and I'll prob get my mechanic to take them apart and do a refit if nothing else works.[/quote]
Not really the caliper rubbing but the caliper sticking internally and not retracting the piston far enough for the brake pad to not put pressure on the rotor when the pedal isn't pressed. Also like I had mention if the slides were not greased it could be that the caliper is not able to move freely enough back and forth.
Three thing it could be
1. Bent sheild at the back side of the rotor rubbing(happens alot, just bend it back)
2. pads not bedded in correct (try several panic stops in a row. if this helps you could sand the rotors and pads to break the glaze and rebed them)
3. hard spot on the pad (i've seen chunks of medal sicking out of very high quality pads that caused noise, inspect close)
Just some ideas.
Bandit and rz got it right. Check the splash sheild first, easy fix, just bend back. Next check for dragging front brakes with the front wheels off the ground. Could be gunk and/or no lube where the pads go and hanging up the retraction of the pad off the rotor when the brake pedal is released. Next check for sticking pistons on the noisy caliper. If the brakes are hot, does the noise go way? If so then try to rebed the pads and rotors. Sounds like the work was done for you, take it back and have them make it right. It is not a parts combination problem. There are many 968s with this combination of parts without constant noise. Mitch
[quote name='oppositelock' post='46693' date='Jan 31 2008, 08:27 PM']Bandit and rz got it right. Check the splash sheild first, easy fix, just bend back. Next check for dragging front brakes with the front wheels off the ground. Could be gunk and/or no lube where the pads go and hanging up the retraction of the pad off the rotor when the brake pedal is released. Next check for sticking pistons on the noisy caliper. If the brakes are hot, does the noise go way? If so then try to rebed the pads and rotors. Sounds like the work was done for you, take it back and have them make it right. It is not a parts combination problem. There are many 968s with this combination of parts without constant noise. Mitch[/quote]
Hopefully it's one or the other symptoms listed above. Will have it checked soon. Thanks a lot for the advice guys!