Wear on front tyres

Hello and good evening. With my CRV I drove about 12000 km on the original Dunlop tires, whereby the tyres, which are now mounted in front, run only 3000 km in front. Now I have noticed that both front tires in the outdoor area are quite strong. They are not there yet flat, but of the 8mm profile are only 5mm left. The lamellas are all on one side round. Some lamellas are already eaten to the tail. The surface of the rubber, in the outer 3cm area, looks like a bad eraser when I drove Sück highway during heat. Has anyone made similar observations? Maybe I should have the track measured? Hendrik PS: I count myself among the more gentle riders…