Stoptech C43 Competition Front BBK Review
#11
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#12
#13
The front BBK shifts the brake bias forward 13%. That's not an insignificant amount.
#14
Putting it all together (math is in the spreadsheet), the C43 BBK generates 7% more brake torque than the ST40 and 12% more than stock. Again the math is all in the spreadsheet - if there's a mistake I'm happy to correct it, but I think it's accurate. It's pretty basic physics.
#16
https://docs.google.com/spreadsheets...it?usp=sharing
With all due respect to Stoptech, their numbers should be close to the math - if not, then something is not right. Sometimes the information gets altered as it transfers from engineers to marketing people. I've had that happen far too often in my professional life to just accept numbers when they don't align with basic math and physics. Again, if you don't mind, please review the math in my spreadsheet and if there's an error, I'm happy to fix it.
FYI, I'll leave it to others to call if they choose. I already have a BBK
#17
Hymm not sure. I think your math is correct but like I said I am willing to bet there are other factors as they are designed to work with OE rears and not throw off the balance. They did tell me that the force point isn't always assumed to be at the center of the pad. Looking at the sheet though I am pretty certain the Spoon's piston size is off. I measure mine at about 36 & 40mm.
Thanks,
Brook
Thanks,
Brook
#18
Just out of curiosity, why is this limited to 00-05. What is different about the 06+ that these will not work?
#19
Hymm not sure. I think your math is correct but like I said I am willing to bet there are other factors as they are designed to work with OE rears and not throw off the balance. They did tell me that the force point isn't always assumed to be at the center of the pad. Looking at the sheet though I am pretty certain the Spoon's piston size is off. I measure mine at about 36 & 40mm.
Thanks,
Brook
Thanks,
Brook
Changing the piston diameter to 36 and 40 makes a significant difference: the front bias drops to 7% which is 2 percentage points more than the ST40 kit. So that's probably the issue - the website data is inaccurate.
#20