So I recently brought a 2010 xr6 turbo done about 98000 and the brakes shudder about 40% of the time during braking, I have a mate who's a mechanic told me the brakes might need to be machined, I've read the shudder can come back after a while with this method, I found online a set of DBA4504S rotors for 320 for the pair, so the question is should I buy new rotors or machine the old ones