New Pads/Rotors noises

[NightmareMoon]

GLOC and most vendors will tell you that noise is a thing with the R8/10/12/+ pads. That's why they don't recommend you street drive on them, and its why a bunch of us swap pads for track/street. Its dirty work but it doesn't take very long.

The GS1s street pads don't squeal. I don't think its a 'shim' thing (I don't even know what that means. the stock rear hardware clips stay in pace, and yes, you're supposed to use backing plates with the brembo front pads, so maybe that's a non brembo thing?) I have GS1 pads which I swap for street use and they're exactly the same construction as the R12/10s I use on track, but no noise., so I'm not buying that the noise is a shim thing, its just the pad compound. Most good track pads squeal.

The squealing may get better when the pads wear down, but you can't really count on it. I'm used to the R12s making a horrendous racket when I street drive on them, but I've been lazy and this set of R12s is down to ~40% and they've actually stopped making noise, so i've left them on the car since september. Squealing is a bit different/better/worse when you're using the track pads hard. When you're street driving on them, they don't lay down the same amount of pad material on the rotors and that seems to have an effect on noise, but sometimes I can't tell if it make it better or worse.

FWIW, usually the brake squeal is almost perfectly cancelled by the car glass if the windows are all rolled up (in my experience anyway).

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[Mr2raw]

GLOC and most vendors will tell you that noise is a thing with the R8/10/12/+ pads. That's why they don't recommend you street drive on them, and its why a bunch of us swap pads for track/street. Its dirty work but it doesn't take very long.

The GS1s street pads don't squeal. I don't think its a 'shim' thing (I don't even know what that means. the stock rear hardware clips stay in pace, and yes, you're supposed to use backing plates with the brembo front pads, so maybe that's a non brembo thing?) I have GS1 pads which I swap for street use and they're exactly the same construction as the R12/10s I use on track, but no noise., so I'm not buying that the noise is a shim thing, its just the pad compound. Most good track pads squeal.

The squealing may get better when the pads wear down, but you can't really count on it. I'm used to the R12s making a horrendous racket when I street drive on them, but I've been lazy and this set of R12s is down to ~40% and they've actually stopped making noise, so i've left them on the car since september. Squealing is a bit different/better/worse when you're using the track pads hard. When you're street driving on them, they don't lay down the same amount of pad material on the rotors and that seems to have an effect on noise, but sometimes I can't tell if it make it better or worse.

FWIW, usually the brake squeal is almost perfectly cancelled by the car glass if the windows are all rolled up (in my experience anyway).

Thank you for the insightful response.

Would you happen to know if this additional noise I am hearing is normal too?

When I reverse my car and turn the wheel, it creates a clunk sound. When I refer to turning the wheel, I mean specifically only referring to turning the wheel when I reverse the car to straighten out the car. If go forward again then put it in reverse and turn steering wheel, I can hear the clunk again. The clunk noise is repeatable with the same motion.
If I am at a light, from dead stop and turning the wheel or driving the car while turning full and making U-turns, no clunk sound.

Does your car make this noise too when you run the aggresive R pads?

 

[NightmareMoon]

Thank you for the insightful response.

Would you happen to know if this additional noise I am hearing is normal too?

When I reverse my car and turn the wheel, it creates a clunk sound. When I refer to turning the wheel, I mean specifically only referring to turning the wheel when I reverse the car to straighten out the car. If go forward again then put it in reverse and turn steering wheel, I can hear the clunk again. The clunk noise is repeatable with the same motion.
If I am at a light, from dead stop and turning the wheel or driving the car while turning full and making U-turns, no clunk sound.

Does your car make this noise too when you run the aggresive R pads?

no, in my experience clunks are not normal, except with stock hardware the car will clunk once in cold weather on the first turn from the front shock needle bearings. What you describe kinda sounds like that maybe? Idk though.

Clunks that repeat usually indicate something is shifting that probably shluldn’t. Check wheel hubs and other suspension joints fot play.

 

[Mr2raw]

no, in my experience clunks are not normal, except with stock hardware the car will clunk once in cold weather on the first turn from the front shock needle bearings. What you describe kinda sounds like that maybe? Idk though.

Clunks that repeat usually indicate something is shifting that probably shluldn’t. Check wheel hubs and other suspension joints fot play.

Maybe clunk might not be the right word, sounds like small crack/pop. Regardless you said that behavior is not normal. I'll take a deeper look

 

[Ford Guy V8]

Thanks for the reply man.

It is my first time using race pads so I didn't know what to expect. They did perform very well at the track and I was very happy.

I don't think I'll be swapping out pads tbh because I rarely drive the car because it is essentially a weekend car and occasional track car now.

But that sucks. Quiet annoying that going forward, the car will continue to squeal even when I am not applying the brakes. At least I know it won't be wearing out my rotors faster.

Did you continue to have this issue over time? My race pads squeak when I'm not applying the brakes so it looks like they're rubbing slightly.

 

[Mr2raw]

Did you continue to have this issue over time? My race pads squeak when I'm not applying the brakes so it looks like they're rubbing slightly.

Yeah I still experience it but is not like they're wearing down unevenly or anything.

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