A Merc friend driving a 124 was looking over my shoulder as I changed the REAR pads and rotors on my car.

When I was fitting the new pads, he advised me to sand the pads first to avoid any squealing (???).

Not wanting to offend him , I did it and amazingly, the new brakes do not squeak at all!

Btw, my setup in the rear is BREMBO rotors/Texstar pads.

Originally, they were the same as the front ATE rotors/Jurid pads.

In any case, no squeals from either setup.

Cheers.