Let’s talk brakes on a 4S....standard red or PSCB...

Mile2424

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Do the PCSB provide any additional stopping power or increase in rotor or caliper size?
 

jonze

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Calibers were bigger for 2020...not for 2021. Rotors are slightly larger. I don’t have firsthand knowledge of increased stopping power, but apparently most of the braking is regenerative.

Do the PCSB provide any additional stopping power or increase in rotor or caliper size?
 
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Mile2424

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Calibers were bigger for 2020...not for 2021. Rotors are slightly larger. I don’t have firsthand knowledge of increased stopping power, but apparently most of the braking is regenerative.
what are the changes for the 2021 model year compared to 2020?
 

JacobDK

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Calibers were bigger for 2020...not for 2021. Rotors are slightly larger. I don’t have firsthand knowledge of increased stopping power, but apparently most of the braking is regenerative.
This first line does not make sense.

standard disc are 360 mm @front
Pscb my21 are 410mm (my20 415mm) @front
Standard calibers are 6 pot
Pscb calibers are my21 6 pot (10pot my20)

But each piston (pot) in the caliper is smaller on the standard 4s than pscb and the caliper is smaller than the pscb version due to the fact that a caliper has to be matched to the circumference of the disc (pscb has a larger disc diameter and therefore larger circumference).

the pscb my20 and my21 are supposed to have the same braking force which makes sense since the disc are key not the calipers. The disc have to absorb the energy (transformed to heat) and to make the heat go away in order to brake the next time round (which is why you ventilate disc). Groved disc are used to shed the brakedust away but neither systems have this (it kills the pads fast) but since the pscb is of harder discmaterial they will produce less brakedust and therefore be more effective in this regard as well.

my20/21 pots and disc. Since the disc size is basically the same - the braking force is basically the same (with 6 pot calipers you wont go down on force - F1 cars have 6 pot titanium calipers).

plus for my21 is a 11 kg saved weight of unsprung weight which benefits handling. Service is also more simple and must be less costly.

plus for my20 is a meaner/cooler look. The 10 pots are smaller and placed within the caliper in a way where the force is distributed more on the disc (more towards the centre) wich in theory will enhance the disc life. Modulation of brake force is also easier to achive but porsche claims the my21 is as good.

plus for the standard are price - when new and when replacing (pscb disc are crazy expensive)
standard is all you willever need -I got the pscb though because of mission e wheels..
 
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Mile2424

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This first line does not make sense.

standard disc are 360 mm @front
Pscb my21 are 410mm (my20 415mm) @front
Standard calibers are 6 pot
Pscb calibers are my21 6 pot (10pot my20)

But each piston (pot) in the caliper is smaller on the standard 4s than pscb and the caliper is smaller than the pscb version due to the fact that a caliper has to be matched to the circumference of the disc (pscb has a larger disc diameter and therefore larger circumference).

the pscb my20 and my21 are supposed to have the same braking force which makes sense since the disc are key not the calipers. The disc have to absorb the energy (transformed to heat) and to make the heat go away in order to brake the next time round (which is why you ventilate disc). Groved disc are used to shed the brakedust away but neither systems have this (it kills the pads fast) but since the pscb is of harder discmaterial they will produce less brakedust and therefore be more effective in this regard as well.

my20/21 pots and disc. Since the disc size is basically the same - the braking force is basically the same (with 6 pot calipers you wont go down on force - F1 cars have 6 pot titanium calipers).

plus for my21 is a 11 kg saved weight of unsprung weight which benefits handling. Service is also more simple and must be less costly.

plus for my20 is a meaner/cooler look. The 10 pots are smaller and placed within the caliper in a way where the force is distributed more on the disc (more towards the centre) wich in theory will enhance the disc life. Modulation of brake force is also easier to achive but porsche claims the my21 is as good.

plus for the standard are price - when new and when replacing (pscb disc are crazy expensive)
standard is all you willever need -I got the pscb though because of mission e wheels..
very informative. Thank you
 

Tazer

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I feel like the PSCB aren’t necessary on the Taycan. Brakes aren’t used as much and I don’t feel like the price + consumables price is justifiable
 

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