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      09-29-2020, 01:33 PM   #7
Captain Caveman
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Drives: AW 2013 e92 M3
Join Date: Oct 2015
Location: UK

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Quote:
Originally Posted by jritt@essex View Post
Of course. We are transparent with all of the data regarding our kits. You can see the piston bores by clicking the 'technical specifications' tab on any of our brake kit listings.
Thanks for providing the info - that's very useful and refreshing to see so much detail - nice one!

I've done the maths, and it seems your kits has about 9% smaller piston area than a stock E92 M3, meaning 9% firmer pedal, 9% less travel/modulation, and 9% less piston pressure, with a slightly more rearward bias:

Essex Racing AP kit
Front 27/31.8/38.1mm = 2506 x 2
Rear 28.6/34mm = 1550 x 2
Total 4056 x 2 (9.4% firmer pedal / less torque) 61.7% front bias

Obvisouly I've no doubt that you went through very deliberate and considered R&D when choosing the piston area for our cars, so I am curious as to your rationale for deciding on a not insignificant reduction in piston area and the consequential impact on torque and pedal feel/travel.

I've heard it said before that AP calipers tend to have smaller piston area than stock as a general rule, so there must be a reason. Be great if you could share your wisdom?

Cheers,

Mart.

Last edited by Captain Caveman; 09-29-2020 at 05:34 PM..