2010 BMW 335I Suspension Problems

MY REAR LEFT BRAKE CALIPER STARTED SHOOTING OUT BRAKE FLUID FROM WITHIN THE MIDDLE. I HAVE AN ATE CALIPER. THIS COVERS MODELS FROM ABOUT 2006-2014. ON BIMMERFEST.COM, E90POST.COM, ETC . . . MANY PEOPLE HAVE HAD THIS PROBLEM. ON ROCKAUTO, AUTOZONE, ETC . . . THE PREMIUM RECOMMENDED REPLACEMENT IS TO GET A CALIPER FOR THE REAR THAT HAS NO PHENOLIC PISTON, YET, INSTEAD HAS A SOLID METAL PISTON. UNTO THE WORST, AT TIMES, THE PHENOLIC PISTON HAS EJECTED FROM THE CALIPER AND JAMMED THE BRAKE PADS TO THE VERY ROTORS. ATE CALIPERS ARE OFTEN USED AS SINGLE OR DUAL PIN BOOTED CALIPERS ON BENZ. THEY ALWAYS HAVE METAL PISTONS. I HAVE PREMIUM BRAKES. MY ROTORS ARE UNHARMED, MY BRAKE PADS ARE UNHARMED. THERE IS NOT A SCRATCH IN MY ROTOR. MY WHEEL BEARING IS GONE. MY SUSPENSION IS GONE.MY SUB FRAME IS GONE. IT FLATTENED MY TIRE. IT MADE...