All EBC rotors including 3GD Sport Rotors are British made and are precision machined in the UK. Rotors are made from high quality grey iron to exacting standards and undergo extensive testing and rigorous quality control. Dimpled and slotted rotors can significantly improve brake performance and longevity when used with a matching high friction brake pad set. Having sold hundreds of thousands of brake kits EBC Brakes feel confident their approach is as perfect as it gets.
EBC are of the opinion that slotted rotors have been "Over sold" by certain marketplace participants and their findings are that a dimpled and slotted rotor will only give benefits if used with a pad that compensates for its reduced surface area.
EBC recommend the use of a premium pad such as Redstuff brake pads or Yellowstuff brake pads to complement your new 3GD dimpled and slotted rotors which will provide the optimum balance of life and performance.