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Old 09-27-2019, 06:15 PM   #18 (permalink)
obender66
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Join Date: Jun 2015
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Drives: 2016 370Z Base 6M GM
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Quote:
Originally Posted by cv129 View Post
Don’t know if Obender was measuring caliper or rotor temps.

For rotor temp measurement after a cool down lap, assume OEM Akebonos and no brake cooling ducts: the front rotors are just tiny bit bigger than the rear in diameter (355 vs 350mm), but thickness differs greatly (32mm vs 20mm). The front rotors carry a much greater volume of heat with not much more surface area to for heat dissipation. With a method like using an infrared temp gun, which measures surface temp, I would not be surprised there is a temp difference, even if the peak temp during braking may be the same between front and rear rotors.
Yes, there was some cool down, and I agree, they cool off differently. My fronts probably cool off quicker as they are Wilwood 2 piece with aluminum hats and rear are off the shelf Z33 brembos.
I expect to see rears to be cooler, but question is how much cooler? Thank you for AP Racing link-they do not give precise answer, and it cannot be precise due to all the parameters mentioned by other posters. It's understood, but 40%?
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2003 G35 sedan 6MT(good bye-after 15 years together )
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