BTW Gary, all this is said respectfully, it's just my understanding and not law by any measure.
I still stand by my opinion that from a performance stand point number of pistons is less important then rotor size and to your point, cooling.
Then again,I bought my Brembo GT's 98% based only on bling. But they do perform well and look good.
- 08 135i - Wavetrac LSD, M3 front sway, Meyle HD links, Whiteline subframe bushings, M3 rear guide and upper link, M3 front control arms, HP custom M3 front Strut brace, Megan rear control arms, F30 brake shields -