Hi all, new owner of a 2008 S80 T6 AWD. I searched around a bit but did not find an answer so sorry if this has been talked about already. I am replacing all 4 rotors and pads. 300mm rotors all around. Question is about the rear pads. I have solid rear rotor (non vented) with electric parking brake. It seems the rear pads are identical for solid vs vented rotors. The only difference is the size of the metal retaining clips. Does that sound correct?

I also have the leaking brake booster problem. I read the sticky thread. Brakes feel fine and no warning lights on the dash. I hear the hissing noise when off the brake. Goes away when pushing the brake. I purchased the booster seal and will try to replace that first. If that does not work I will have the booster replaced.