Is it normal to have more brake dust on front wheels

[cxx]

After a couple of fun drives I notice the front wheels have way more brake dusts than the rear ones, is it normal on a cayman R? 

[Lennym1984]

Yup it's normal on any car. When you brake, weight gets shifted forwards and the front brakes do more of the work. It's why you can adjust brake bias in a race car, when it's wet you can shift it backwards to avoid the fronts locking up (in simple terms)