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Steering Wheel Vibration while braking

I am not an engineer, but have 2 friends who are brake engineers and I understand some things. This is a quote taken from me from another thread that no

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Steering Wheel Vibration while braking Steering Wheel Vibration while braking
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Old 06-10-2014, 10:07 AM   #19 (permalink)
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I am not an engineer, but have 2 friends who are brake engineers and I understand some things. This is a quote taken from me from another thread that no one has read haha.

Quote:
Short rant about brake discs:
1) Heat is the killer of brake systems, especially brake pads. The rotor is the main heat sink of the brake system. The heavier the rotor in general, the more heat it can soak up and keep the total system cooler. This makes brake pads last much longer since heat is what eats up pads. So heavier = better. Lightening rotational mass is nice and all, but being able to use your brake pads because they aren't burned down to the backing plate is better.
2) Slotted rotors are designed to help limit buildup on the rotor. Buildup on the rotor is what causes the steering wheel to shake when you hit the brake, I think it's kind of hard to actually warp a huge hunk of steel (I'm sure at temps as high as brakes get you can though. The vanes in rotors help cool them. Slots do not.
3) Cross drilled rotors make no sense to me. I already said rotors are a heat sink, and the more mass the more heat a rotor can soak up. Why would you drill holes in a rotor to lighten it then? Worse though is that cross drilled rotors crack.
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