Thanks for the link Glue Ball.
From what I can gather the B767 slid off the SIDE of the runway with autobrakes 4. This is exactly what I'm talking about.
This need to reduce speed ASAP just doesn't make sense to me especially when there may be so much runway to use. (See the example I gave above).
I understand that the last 600 or so metres would be affected by rubber deposits as you have stated Intruder, but I'm quite sure that that would not come in to play on most long runways, unless you deliberately wanted to roll through to the end.
Regarding the spoilers, I was under the impression that the downforce created by their deployment on touchdown not only countered the lift created by the rest of the wing but actually produced a positive downforce on the wheels.
Refering back to that example of Glue Ball's, is that an example of aquaplanning causing the water under the tyres to boil, creating a cushion of steam? I seem to remember reading about that somewhere. Pretty amazing!!