ℬête Noire
Active Member
This is definitely incorrect when it's RWD only, as you're doing your braking with a lot lower friction per mass you're stopping. The faster you are stopping the more this happens, until you reach an equilibrium where your loss of friction on the rear tires caps your braking potential. At that point you're going to get a lot of wear on those tires as they skip & scuff across the pavement.
In AWD it depends more on driver skill/use. If you're constantly doing "panic braking", just by taking your foot of the accelerator, you're going to go hard on your tries. This doesn't matter so much in something called Track Mode because just driving onto the track is implicitly kissing your tires goodbye, day-to-day driving this is less the case.
My point here is that as you raise the base regen you'll start seeing even more variation, from situation to situation, in how much regen braking you get as you start bumping into the ceiling of what is prudent to push back into the battery. This would somewhat complicate driving as you let right off expecting heavy braking and that doesn't develop. It already is something of an issue in cold weather (although around freezing point and below you want less aggressive regen, in case of road icing) but imagine if suddenly it matters quite a bit whether you are at 80%-90% SOC or somewhere in the 30%-40% range. Now you're seeing 15-20% drop in braking power, that'll be a bit disorientating and IMO a recipe for inducing driver error.
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