Weird brake biting point change - 22 4s st

[GtechRob]

anyone notice that when dabbing brakes within a few seconds that the position of the biting point moves slightly down the travel of the pedal? have regular brakes. Brakes always work fine but there is a split second where I get a sensation of brake failure.

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[W1NGE]

anyone notice that when dabbing brakes within a few seconds that the position of the biting point moves slightly down the travel of the pedal? have regular brakes. Brakes always work fine but there is a split second where I get a sensation of brake failure.

That's how they are designed to work in Porsches at any rate.

 

[GtechRob]

That's how they are designed to work in Porsches at any rate.

cannot believe that changing the biting point from one second to the next is deliberate

 

[Jayyvr890]

anyone notice that when dabbing brakes within a few seconds that the position of the biting point moves slightly down the travel of the pedal? have regular brakes. Brakes always work fine but there is a split second where I get a sensation of brake failure.

Yes I get a similar sensation when I first set off. Once regen is active after a few min the brake pedal returns to normal.

 

[PDACPA]

There is another thread about it here somewhere. I notice it at a particular point when entering my neighborhood. Slowing down and touching the brake and it is sufficient and then the pedal just sinks further to the floor. Cannot say I have noticed it any other time, but there is something about that soft slowing and then the pedal sinks and you have to push your foot further down.

 

[DerekS]

The first stop after ~6hrs of idle time (if I remember right) uses no regen, to clean/bed the brakes.

I'm always a bit extra cautious for that first stop because it feels so different - the regen really helps a LOT with braking.

 

[W1NGE]

The first stop after ~6hrs of idle time (if I remember right) uses no regen, to clean/bed the brakes.

I'm always a bit extra cautious for that first stop because it feels so different - the regen really helps a LOT with braking.

Correctomundo

 

[PDACPA]

The first stop after ~6hrs of idle time (if I remember right) uses no regen, to clean/bed the brakes.

I'm always a bit extra cautious for that first stop because it feels so different - the regen really helps a LOT with braking.

Mine occurs on my way home from work. I have a very short commute, but have hit the brakes a few times before the place it happens often (but not always). I feel like I am not going that fast (35mph road) and I am pressing the brake, but not that hard and then it sinks.

I will watch for the first stop, but do not recall feeling it then in the past.

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