New brake disk, pads do not rouch all of is area?

[tolum]

2003 Boxster 2.7

Just replace my 4 discs. The pads have lot's of lfe on them so I did keep them.

When doing a street test, I did feel that brake power was missing.

Please see att. picture, looks like the pads are not sitting 100% on disc???

Any idea what I did wrong?

Tks!

Thierry

Edited May 1, 2013 by tolum

[timbo]

You should really replace the pads with new discs, however, it looks like they just need to bed in, you could speed this process up by removing the pads and filing them flat with a rasp or lay a sheet of coarse sandpaper on a flat surface and rub the pads on them until they are flat, making sure you keep them square.

[4agdtym]

Your old rotors were no longer flat - even if smooth. The rotors and pads wear together over time and have the same (mirror image) shape. The new rotors are flat. The old pads are not. Try the sandpaper trick mentioned above. Failure to do that will result in poor braking until the pads and rotors are the same shape and may cause the system to wear out more quickly.

[tolum]

Thanks guys. Already removed one wheel. The surface is flat but not that bad. I will do the sandpaper trick.

Thierry