Quote:
Originally Posted by Norm Peterson
Shims will slow down the rate of heat transfer out of the backing plates into the pistons. Actually, it's the fact that it's two separate surfaces - technically amounting to adding a thermal gap - that gets in the way of the heat flow. Probably means the pads run a little hotter though.
Norm
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Pads don't run any hotter but, it significantly reduces caliper temps.
Pads that do not have shims require shims to be added, since OP didn't run them that significantly contributed to the calipers demise imo.