So it seems we're at a dead end of sorts. My web research has led me to sites where the brakes are either even smaller than the stockers, available only on older SDs while a recommendation to look at another brake maker showed brakes with bizarre cross drilled pattern that look like they wouldn't last five minutes.
Caryt- Hawk pads recommendation is certainly a sound one, but would be nice to combine these with big rotors.
Are there any vendors out there who can help? Two very interested customers here.
Ben- nice stable and it sounds like your problem is similar to mine in that 13.5" brakes on an 8,000lb
unloaded rig just aren't giving you much confidence. I also have an 08 M5 where stock 15" stoppers are employed to stop 3,900lbs. Now, like you, I'm not expecting an SD to stop like that but certainly want more than factory. Let me know if you find anything.