I have in the past had some brake shudder issues (in my pre-Toyota days) and it cost $220 front and $120 rear for rotor machining (at 90,000km). Unless you have a complaint, I wouldn't recommend it, as it uses up rotor thickness, which means you'll need to buy new ones sooner (or have other possible issues). At a guess for an Aurion, you would be up for probably over $500 for a set of new front rotors and over $250 for rears. Which reminds me, I have a full vehicle set of pads and discs (taken from a new Aurion which was never registered or driven) that I could either sell, or keep for when my Aurion needs them (but currently only at 15,000km) ... probably will keep them and sell them later if I no longer have an Aurion. Ebay sells the rotor in a pair for less than AU$300.00 + shipping from NSW. URGENT: Do u know the minimum thickness of Aurion Front & rear rotors? Want to know 'cause my Aurion is vibrating when braking from 110 Km/hour or at higher speeds. Thanks: leck@netspace.net.au