The rotors are slightly larger [more swept area], thicker, and vented
for better cooling. I went with Audi A6 rotors and 200Q calipers for
this reason, MUCH larger swept area.

Karl

Robert Smythe wrote:
> Forgive my usual ignorance but I dont have both sets of parts, stock and
> SA caliper/discs staring me in the face.
>
> If it is the case that the pistons are the same, the pads/swept area is
> the same, is the only "bigness" to the SA brake system the vented rotor?
> There must be more to it, if the brake disc doesnt have a 0.5" larger
> radius, why does one need 15" wheels?
>
> Robert
> 90 MV
>
>
>