Sprung vs un sprung.

[allanallen]

It's less than 50% of the contact material, it's different material and the cover plate will have a higher clamping force, that's how they work unfortunately! It's like competition brake pads, in order to stop you quicker they either destroy your discs or wear out really quickly or both!

I had some Mintex F4r pads in my car, they wore themselves and the brand new discs out in less than 500miles! Over £250 worth.... Gone!!!!! In 500 miles!!! sorry, I digress