Quote:
Originally Posted by lucid
Heat transfer out of the rotor via convection in negligible while braking (I made some rough estimates which were in the order of 2% or less of the heat that was being transferred into the rotor). When you are not braking, the larger diameter would translate to slightly higher surface area for convection, but there the real factor is the convective heat transfer coefficient, which has to due with airflow characteristics, which has a lot to do with the vent geometry, cool air supply, etc.
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Does Brembo rotors have significantly better designed cooling than OEM?
It always struck me that developing better cooling ducting to the OEM brakes (with uprated pads/fluid) would be a far better cost/benefit upgrade than fitting larger brake hardware.
Quote:
Originally Posted by lucid
Also, it seems like the stock hats are also Al, so I don't see how aftermarket hats can be significantly lighter than stock.
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Its something that Brembo boast so I take them at their word. Some BBKs do seem to have adopted a larger diameter hat than OEM to help offset the weight that a larger diameter rotor imposes.