Brake Disc Weight
WARNING: This page is about a different car, the 2011 Jaguar XKR, 2011 Jaguar XK, 2010 Jaguar XKR, and 2010 Jaguar XK. However, it is still accessible from the selected car via links, so may be relevant.
The CCM brake disc must be replaced whenever the weight is equal or less than the minimum weight value indicated on the disc bell. In this case, both the discs on the same axle must be replaced.
In order to minimize measurement errors, it is required to evaluate the weight loss after an accurate cleaning and a complete visual inspection.