Composite rear brake rotor replacement?
- Thread starter ron350
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What type of application are we talking here?
IMO the only reason to use a 2-piece rotor setup is when you go aftermarket to a size that is not commonly sold. Purely a manufacturing economy of scale reason rather than a functional reason.
I imagine the heat transfer on a 2-piece rotor is worse than a typical cast iron setup. Rear only provides about 20% of all braking power so it is not very significant to begin with.
I imagine the heat transfer on a 2-piece rotor is worse than a typical cast iron setup. Rear only provides about 20% of all braking power so it is not very significant to begin with.
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Is the emergency brake system in the center steel part?
Originally Posted By: PandaBear
IMO the only reason to use a 2-piece rotor setup is when you go aftermarket to a size that is not commonly sold. Purely a manufacturing economy of scale reason rather than a functional reason.
I imagine the heat transfer on a 2-piece rotor is worse than a typical cast iron setup. Rear only provides about 20% of all braking power so it is not very significant to begin with.
Well your dont want heat transfer into your wheel bearing anyway but wont make a big enough differe anyway. the use of a 2 part rotor is normally use in very high heat things like racing cause it lets the rotor grow with out warping
IMO the only reason to use a 2-piece rotor setup is when you go aftermarket to a size that is not commonly sold. Purely a manufacturing economy of scale reason rather than a functional reason.
I imagine the heat transfer on a 2-piece rotor is worse than a typical cast iron setup. Rear only provides about 20% of all braking power so it is not very significant to begin with.
Well your dont want heat transfer into your wheel bearing anyway but wont make a big enough differe anyway. the use of a 2 part rotor is normally use in very high heat things like racing cause it lets the rotor grow with out warping
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JTK
$100 Site Donor 2025
For a 96 Regal I'd run what ever works and is the cheapest. FWIW, my 2007 Cobalt had composite drums on the back. They were almost toy sized though.
Joel
Joel
Maybe this was done to have future brake jobs cost less, by only replacing a smaller rotor?
Or to be more suitable for what otherwise would be a complicated casting?
Or to be more suitable for what otherwise would be a complicated casting?
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Kestas
Staff member
Steel is stronger than cast gray iron.
Gray iron has better thermal transfer properties than steel.
A composite brake rotor puts each material in its optimal role.
The downside is higher cost.
Gray iron has better thermal transfer properties than steel.
A composite brake rotor puts each material in its optimal role.
The downside is higher cost.
But who needs strength?
I mean, cast iron rotors don't break.
I mean, cast iron rotors don't break.
Kestas
Staff member
Originally Posted By: mechtech2
But who needs strength?
I mean, cast iron rotors don't break.
Then why does anybody make composite rotors? Manufacturers don't make them for the fun of spending more money!
But who needs strength?
I mean, cast iron rotors don't break.
Then why does anybody make composite rotors? Manufacturers don't make them for the fun of spending more money!
Originally Posted By: Kestas
Originally Posted By: mechtech2
But who needs strength?
I mean, cast iron rotors don't break.
Then why does anybody make composite rotors? Manufacturers don't make them for the fun of spending more money!
Volume. They are probably cheaper for a small volume than a different / non standard cast size.
Originally Posted By: mechtech2
But who needs strength?
I mean, cast iron rotors don't break.
Then why does anybody make composite rotors? Manufacturers don't make them for the fun of spending more money!
Volume. They are probably cheaper for a small volume than a different / non standard cast size.
Also, maybe for heat dissipation. The bearing would run cooler with the 2 part system.
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