Spacer Material: Does It Even Matter?
So, let's say that you need to space a brake caliper away from an adapter or a mount because you'd like to use a larger rotor for whatever reason (say, from 160mm to 165mm or 170mm.) Would you rather use a spacer that's aluminum alloy, brass, or steel? Would you use one or the other just because you happen to have a few lying around? Does it even matter?