Squealing brakes

[pulse]

I bought HAWK Performance HPS brake pads, had both the front and rear rotors skimmed before installing them - had them probably burnished once installed.

When I come to a complete stop or when I just start the car and the pads are cold, they can squeal very loudly. If I drive for a bit and get them warm enough, it seems to go away.

My mechanic suggested this is fairly typical of performance pads - is that true?

 

[paulgs1000]

Can't speak for the Z4 but had performance pads put on my previous car (MX5) - improved braking and performance but also came with similar squeal as you describe - went back to originals on next fitment.