My back wheels are like yours, camber -3.21°, but toe is -3.3mm. Well, look at my tire

, only 2 years old, 20.000km. The rest of the profile is 5mm. It was a bit worn onm the inside, but after a drive to Auckland and back (866km) I was at the canvas I'm gonna order tonight the poly bush set plus a camber toe correction set.