That depends. 205 is the width of tyre in mm, 70 is the percentage profile of width (i.e in this case 70% of 205 = 143.5 mm) and 15 is obviously the radius of the wheel. To see if this tyre wheel combination will fit your car follow the link below. Enter your current wheel size and your proposed wheel size, the measure if your wheel arches can cope with the increased space taken up by the tyre. www.tyresave.co.uk Generally it most probably will with this combination.