I have noticed that Nokians start off giving very good wear characteristics which continues for 20,000 miles but after that wear rate appears to increase. I've noticed this to be more pronounced with Nokian Summer tyres/tires. What I have seen on Nokians is very comprehensive advice - on the tyre wall - of Tightening Torque relative to tyre pressure. e.g. on WR SUV3 s
Tightening Torque

90 110 120 130 140 Nm
32 35 38 41 44 47 49 PSI
220 240 260 280 300 320 340 KPc

I've never seen this on any other tyre manufacturers product.