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The brake rotor cleaning is cycles. Motorbike discs are strong enough to not deform.
The self centering is something I have never though of, but makes sense for a cycle with thinner discs.
On cycles I have only had single and double piston calipers. That didn't seem to have that issue, that I noticed.
lynx
I presume that's motorbikes...
A caliper will never self centre unless all the pistons move equally, which invariably they never do.