Needing New Brakes at 4mm?

[mcomet]

I don't know what they charge but you might want to try Michael Stead Porsche up in Walnut Creek if you want to stick with a dealer. Tell em I sent you. That said I might do my own front brakes myself here soon. Unlike your dealer saying to change early at 4mm I suspect they will tell you to wait until you hit the limit of 2.5mm or so when the sensor lights activate to save you money. a full pad should be around 10mm.

Btw does anyone have any pictures or info on how to properly measure the rotors? I have a digital caliper/micrometer. I assume the wheels have to come off for this? I know I will need brakes but I am concerned if I DIY then I won't know if rotors are bad...