Bridgestone Potenza RE050, very stiff sidewalls, very good feedback through the steering wheel, superb steering response and excellent grip in the dry, but you must warm them up first. Not so good in the wet, personally I don't have confidence in them in the wet like I have confidence when driving on Goodyear Eagle F1 GS-D3, but that could be because Eagle F1's are very very soft, and because you can't get enough heat in Potenza's when it's wet or damp. No comparisons in the dry, Potenza's are by far better.