Well you all know I drive the mini on the autobahn daily and have been happy with my stock brakes BUT.. I am developing hot spots on my rotors. I have the JCW brake ducts and am running TSW slotted rotors and EBC red stuff pads (never had any issues stopping). How bad is it to have hot spots on your rotors? They do have a little vibration at the moment while hard braking. If I do go with a BBK I do not want to use studs and I would prefer to still be able to use my 16" winter wheels. What do you all recommend?