We’re replacing front brake discs and pads today for a client who is experiencing a brake judder. This can be caused by a warped disc, or scorring across the surface of the disc (ripple effect) as you can see here. The new disc is perfectly flat, there are no ridges for the brake pads to ride on so the brake pedal will now feel smooth.
Any time we fit new brakes we always recommend gentle braking for the first 300 miles. Even for these monsters!