how so? by having more surface area with the bumps than w/o them?
i believe so, more surface= better heat dissipation. my friend is a toyota tech. and he just installed a TRD
supercharger in his tundra.if you look at the supercharger it has the same bumpy surface,the manual states that if you polish the superchager it could reduce the heat dissipation by as much as 30%. i would think that the same would be true about the brake calipers as well.