We got a note from our fleet manager that we're 'tearing up' 748 brakes using the procedures designed for 744s (Flaps 25, idle reverse). Pix included showed brake assemblies with 'major damage'. no indication of similar damage on the 744s.
It should be obvious that when landing a heavier airplane at near its limit weight, using procedures for lighter airplanes may not necessarily work well. While the 748 brakes and tires are bigger/heavier, they are apparently pushing the limits as well.
FWIW, I've adopted the following personal guidelines, to reduce max tire speeds and brake energy:
For takeoff, Flaps 20 at 320 Tonnes or above. That goes along with the concept that the 744 is 'heavy' because bank is restricted with flaps up below Flaps UP+20 speed [FCTM 3.37: "747-400 Above 680,000 lbs (309,000 kgs), limit bank angle to 15° with flaps up until reaching UP + 20 knots."]
For landing, Flaps 30 at 250 Tonnes or above. Max reverse if Autobrakes 3 or above required for landing performance. 250T is the baseline landing weight for performance charts, so I assume anything above that is "heavy".
YMMV, and you may have different views on performance...