I have a 2014 SL550 R231 and it's time to replace the brake pads on the rear. The cost from Mercedes is $1091.00 after a 10% discount. I have replaced the brake pads on all of my cars but have not done it on my SL550. Wondering if anyone has completed their own brake pad replacement as well as recommended pads to purchase? Any tips you may have on how to do the job would be welcomed?