Here is info on the new brakes

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World first: newly developed AMG high-performance composite brakes
The completely newly developed AMG high-performance composite brakes based on the ADAPTIVE BRAKE system set new standards in terms of stopping distances, sensitivity and durability. A new twin sliding calliper is used for the front brakes, the kind of innovation people have come to expect from AMG. This new, unique technology combines the advantages of a floating-calliper brake – lower heat transfer to the brake fluid and significantly improved ride comfort due to the way the brake pads are located – with the performance of a large fixed-calliper brake. At the rear a large sliding frame-type calliper provides the braking. Composite brake discs at the front and rear with a diameter of 390 and 365 millimetres respectively ensure the shortest stopping distances, remarkable strength and outstanding sensitivity. The dual-circuit hydraulic braking system is controlled electronically and supports numerous driver assistance functions that improve safety and comfort. Multi-piece 19-inch AMG light-alloy wheels with mixed tyres provide the contact with the road. 255/40 ZR 19 tyres are fitted on 8.5-inch-wide wheels at the front, while 275/40 ZR 19 tyres combine with 9.5-inch-wide wheels at the rear.