Comments by "Mikko Rantalainen" (@MikkoRantalainen) on "Performance (And Left Foot) Braking Explained" video.

  1. It's also worth mentioning that many cars with drive-by-wire accelerator pedal have stock configuration to ignore accelerator pedal if pressed at the same time with brake pedal. This is designed for fault safety in case the accelerator pedal position sensor fails floored, you can always get the car to idle simply pressing the brake pedal. For this kind of setup, left foot braking doesn't work because every time you touch the brake, the accelerator pedal stops working until you fully lift it and then re-press it.
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  2.  @antoine78150  Sometimes you actually press both (partially), especially with FWD cars if you want the car to oversteer a bit. But yes, you're right in general that left foot breaking doesn't mean that you hold both pedals down.
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  3. Another interesting take to the traction is to pretend that the tires have exactly as much grip sideways as forward and back. Therefore for maximum cornering performance you cannot apply any brakes and for maximum braking you cannot apply any steering wheel. And for situations where you need to brake and steer at the same time, performance of braking and steering are both limited because the sum vector exceeds the limit. This is not exactly true in real world but close enough to make it worthwhile to pretend it's true.
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