I definitely agree with the tire saving/tire utilization concept that's being discussed here Keith .... based on some personal experience with just such a technique.
Having done a lot of endurance roadrace events over the years, forced me to learn how to find additional laps at speed, on a tire that'd begun to sign-off from lack of rubber in the "sweet spot".
What's the "sweet spot"?
That's the narrow range of contact patch ,about 1" in from the edge of the tread surface, where the tire is contacting the pavement at the typical "get on the gas hard pont" ..... on the exit of turns.
The slipping/sliding, and laying down of rubber, that this portion of the tire is subjected to (in a racing environment) makes that area the equivalent of the center portion of a long-range commuter rider's tire. Basically a "flat spot" develops, along with the absence of rubber (and grip) compared to the surrounding tire surface areas.
To put in additional fast laps late into an endurance race, without high-sideing to the moon, I found that it necessary to change one aspect of my riding technique. What was that? The decision of "when" (what point during the process of bringing the bike back from being leaned over, in the later portion of a turn) to begin the serious throttle roll-on for acceleration.
Basically the change consisted of doing just the opposite of what was being discussed before, where the rider was pushing the bike away from them, in an act of "standing the bike up".
In this case the area of the tire where that traditional "standing the bike up" technique had been used in the first 3 hours of the race, had become (as a result) the dead-zone (flattened/little rubber left). So the change of technique was to deliberately keep the bike leaned over longer, while finishing off the hard acceleration turns, so that the more virgin rubber closer to the edge of the tire would be in contact with the pavement during the tire slipping/sliding/spinning of hard acceleration off those turns.
This technique of consciously putting the tire on the "good spot", via a rather atypical timing of throttle and lean angle position, has always worked well in endurance racing. It consistently allowed running at least 1-2 seconds/lap faster then was possible when having to ease the gas on in almost a rain-riding mode style, if using the heavily worn area of the rear tire via a standard riding technique.
Just another version (though in the opposite direction) of the theme of a rider consciously working the bike to use a different lean angle during acceleration, to maximize the available grip.
Gary J
to him, and everyone else who contributed...It's really helped me a lot when it comes to thinking about techniques 
Especially when you both have information that has been proven to be profitable in the sharing, be it through books, videos, schools, coaching etc. It is truly refreshing to see, and thank you for your efforts, those of us with a thirst for knowledge owe you a debt of gratitude.
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