Interesting discussion. I have found the brakes on my 2003 E350 stink. This chassis has rear discs. They are under sized in my experience. Just simply too small. Does the E450 have bigger brakes on both front and back? Also I think I heard the E450 has a better parking brake set up on the drive shaft. My vehicle parking brake set up (internal expanding shoes inside the rotor) is way too small. In fact if you check your owners manual it says the parking brake is not intended to stop the vehicle. It sure won't even when perfectly adjusted .....
