I have tested GP5000 and now I have Corsa G+ Graphene tyres on. First impresssions , the grip is unreal. Suppleness is OK , I could lower the pressure a little more and I am sure it will feel very comfy. I ride Contis at 95rear, 90 front . For Corsas, I raised the rear to 100, front 95. Rolls beautifully. I have extra light tube on the front, standard inner tube at the rear.