Energy
It is not so much about the distance it takes to stop, although obviously important. Just as a guess to land at MTOW for example and not heat up the brakes you would need ohh........15 000 ft ( as a guess). On anything less the amount of heat energy to stop a 747 at MTOW is mind numbing, and as such it heats the brakes and tires to the melting point.
Guess that is why we used to get the biggish bucks.....
FG