I have been riding Fiido M1 Pro bikes with my wife for the second year in a row in the mountains around our city (altitude 450 to 1520 m). I have a mileage of 1,759 km and my wife 1,487 km. We are therefore pleasantly surprised at how much the brakes lasted. The Fiido M1 Pro bikes allowed us to explore our rainforest mountains and their natural karsts, where we wouldn't have gotten to at our age (65 years old). Thanks very much.