Subjective evaluations of tyre noise play an important role during improvement and development of noise reduce tyres. A combination of categorical judgements and the characterization of specific noise characteristics is applied for tyre assessments at various velocity ranges. More than 800 subjective tyre set assessments over a three years period undergo various analyses. Statistical test procedures are applied to reveal the internal structure of the assessments. In order to find an objective description of noise phenomena noise recordings are psychoacoustically preprocessed. Similar to the MP3 procedure irrelevant information is removed in a first step. Auditory important contours are processed. An attempt is made to relate noise phenomena to special characteristics in the obtained prominent contours. (A) For the covering abstract see ITRD E113232.