Quote:
Originally Posted by lucid
If you read the post you quoted in detail, you'll see that I mentioned my E30 M3 has ducting and weighs less than a Z4M (~2500lbs without driver). It is slightly faster than the bone stock Z4M on a tight course. It does have smaller rotors, but that is not a huge consideration for the overall energy balance in prolonged use.
Yes, the Z4M brake vents on the bumper are not very effective (although I did not unblock them completely), and that is pretty much my point.
I wrote "I began" to overheat the front rotors after 3.5 hot laps. Specifically, start at ambient temp, end >500C at paddock without cool down lap after time trial. You can see where that would go if I were to put in 3-5 more hot laps.
Paddock rotor temp was ~600C after 20 minutes in a regular session (not all hot laps) and pads were smoking when I came in. No fade or failure, but if I put 3-5 hot laps on top of that, something could give. (Keep in mind on track peak temperatures are higher than these numbers).
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Brake less, it's just that simple. System has it's capacity. It's possible for a race car to be able to use their brakes freely (not even all of them), not going to happen easily in a street car. Even once the OP has his stoptechs on they will have their capacity, and it's still very achievable for a 3,200 lb car on rcomps.
Not many people install forced brake cooling in street cars.