The time has come to change them, after 4 years that I have them I can say that I am very satisfied. They never slipped on wet or dry surfaces and performed well on dirt without any special requirements. They are a bit noisy, but they cost half the price of the competition. They are made in Yugoslavia and are a subsidiary of Michelin, without meaning that they have the same quality. But I never had any problems with these and I might put them on again 50/50