Anyone have an idea why my brake calipers behave differently on the right and left side?
On one side (left - the car is left handed) it seems like the pistons are linked together, i.e. one piston moving in --> the other piston moving out and vice versa. When driving the car, this side tends to stick, i.e. the brakes will not release properly. The problem is less dominant in cooler weather. Both pistons move easily in their seats.
On the other side (right), the pistons seem to work "independently" of each other, i.e. one piston moving in --> no movement on the other piston. This side don't have the sticky brake problem, although the pistons don't move as easily....

When applying the break pedal, all four pistons seem to move approximately the same.
I have the "S" model 7.5" discs.
What is the right behaviour?
//Stefan