I am not sure it is. I think the ABS computer measures wheel speeds and tells the pump how to modulate fluid pressure to prevent too much if a difference. My assumption is that it is programmed to stock tire diameters.
However, it may have a lot of flexibility. I don’t know. Could be that 5-10% speed differential is what it takes to represent impending lockup. But you would be using up that margin and thus be closer to activation by deviating too far from factory spec.
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