My Stelvio's brakes seem variable in the amount of stopping force I get relative to how hard I push on the brake pedal. When the car is cold, the feel is good and the first few gentle stops are fine. After driving a while the brakes don't seem to give as much stopping power and I have to push harder on the pedal. Sometimes when I release the brake pedal the brakes seem to stay on a moment or two before releasing. One time on a fast left sweeper I braked, then let off the brake and on the gas, but the car kept slowing for a second or so. All of these signs are as if the brake calipers are dragging or not releasing promptly. So far I have no indication the problem is at just one wheel or all of them. Has anyone else had experiences like this?