Tires pick up sand/fine gravel and hurl it into the wheel arches like a rattle. Brand representatives indicate in responses to reviews: ". tires for city trips", ". self-cleaning", and ". do noise isolation." Pirelli Сinturato P1 tires collect fine sand/pebbles on urban roads, after leaving the curb, after passing fresh patches on asphalt, etc. Tires with such a "wonderful" feature are yet to be found. Unstable behavior in a rut, hydroplaning is present, moderately hard.