Cayman S - brake pads for track?

[petermann]

I've had a Cayman S for nearly a year (bought from OPC so still warranty remaining) and thinking about changing the stock pads for something better for track. Does anyone have any suggestions?

Also, I know that changing the pads would void the warranty, but could I replace any track pads that are fitted with the current ones (that still have plenty of life left in them) before the next service? Or would there be potential issues?