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      06-15-2012, 03:46 PM   #1
ILLCOMM
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355mm BBK vs stock fronts

Am super close to purchasing a stoptech kit with 4-piston fronts/rears to maintain compatibility with my stock 18's (though my current wheels can fit a 6-piston solution).

my question- the 355mm stoptech fronts actually have less surface area than the stock fronts (which is very slightly larger). so, do I actually gain all that much?

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      06-15-2012, 03:49 PM   #2
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The most gain from a BBK is the fade properties not just size differences.
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      06-15-2012, 03:56 PM   #3
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The most gain from a BBK is the fade properties not just size differences.
but isn't fade a function of heat dissipation, which is directly influenced by rotor surface area and density?
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      06-15-2012, 04:36 PM   #4
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Quote:
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but isn't fade a function of heat dissipation, which is directly influenced by rotor surface area and density?
Yes but also caliper material and size. FWIW, I had 355 4-piston front Stoptechs on a 350Z I used to own. I could beat on them with no fade ever. My guess is that you will have no issue.
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      06-15-2012, 04:53 PM   #5
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This thread will provide some insight into the differences. The rotor size is a factor but airflow, rotor mass and caliper mass are more important.

http://www.m3post.com/forums/showthr...ghlight=racing
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      06-15-2012, 05:25 PM   #6
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This thread will provide some insight into the differences. The rotor size is a factor but airflow, rotor mass and caliper mass are more important.

http://www.m3post.com/forums/showthr...ghlight=racing
Nice! very helpful. Thank you.
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      06-16-2012, 01:16 PM   #7
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The st rotors are thicker. 35mm vs 30mm for stock.

Also, frustration and time saved during pad changes is also a big plus.
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