The coefficient of friction, or COF, of Filled Brazils Vitoria White Granite tiles can vary depending on various factors such as how the tile is finished, its surface texture, and the presence of any additional coatings or treatments. In general, granite surfaces tend to have a COF ranging from 0.5 to 0.7. For more specific information on the COF of Filled Brazils Vitoria White Granite tiles, it is recommended to consult with the manufacturer or supplier of the tiles.