I had the WRG4 tires on my 2018 Outback for 80,000 miles and probably could have gotten at least an additional 5,000-10,000 miles on them if I wanted to push it. They are absolutely phenomenal in Winter driving and well above average in all other conditions. They are the next best thing to a dedicated snow tire for snow driving.
Buyer beware though, these tires are noisy at highway speeds. About 50 mph there is a very pronounced droning noise that does not go away, in fact it only gets worse as the speed increases.
I'm shopping right now for new tires for my 21 Outback and while I'm a huge fan of the Nokian brand I will not consider the WRG4 tires this time because of how noisy they are. I will probably go with the General Altimax 365 if I go with another all weather tire.