V70R AWD L5-2.5L Turbo VIN 52 B5254T4 (2004)
M1 at both ends of the spoiler = 43 mm
M2 = 14 mm
The M3 measurement must be the same on the left and right-hand sides.
Check that the tape on the spoiler is in contact with the tailgate.
Note! To ensure optimal adhesion, do not wash the car for 72 hours.