Yes I agree, if you are taking about calibrating the software on a robot who's job is creating 2nm soldering connections on a micro processor.
But like I said before, Track Mode has to be way more resilient than that to work because the road conditions together with the equipment ware are far larger factors on braking performance than the small differences between P+ and P-. I think they have to account for much larger fluctuations in behavior anyway.
I mean just focusing on the response of the OEM tire it would be a function of at least wear levels, temperatures, air pressure, and tarmac. What if someone changes the tire? Then with the brakes you have wear, temperature, ect. IMO it's all about having the right sensors.
If you look at the basic control theory for maglev trains, you have a feedback control system that controls for things like weight. I wouldn't expect the maglev trains to only be able to operate if they have the exact amount of weight it was designed for. Instead, feedback response systems account for and dampen out the effects of various weights of people getting on and off.