Squealing newer brakes on passenger rear tire only??

[testdepth]

Sounds like the squealer tab on the pad has been bent and it contacting the rotor when brakes are applied. It’s that or vibration. Was only one rotor replaced? You may have a caliper issue as well.

We replaced calipers, rotors, pads and hardware on passenger and driver's side rear a few months ago. No squeal until recently and only happens when slowly applying the brake and only to the on side. I watched a video from Porsche on brakes and squealing. Basically after everything was looked at on the Porsche cars their engineers determined that some combinations of rotors and ceramic pads create a harmonic vibration when the brake is applied and you cannot get rid of it.

 

[davans]

We replaced calipers, rotors, pads and hardware on passenger and driver's side rear a few months ago. No squeal until recently and only happens when slowly applying the brake and only to the on side. I watched a video from Porsche on brakes and squealing. Basically after everything was looked at on the Porsche cars their engineers determined that some combinations of rotors and ceramic pads create a harmonic vibration when the brake is applied and you cannot get rid of it.

That is certainly possible. There is a break-in procedure on some pads as-well.