I have a set of Cooper maxx stt pros on now.
I also have them center siped they are great in the mud OK in the snow and terrible in ice or on plowed roads.
I have about 25,000 on them they are wearing pretty well, but I rotate them every 5k.
I run 65psi in them all the time.
They do howl at highway speeds but not unbearable.
I should get about 35,000 - 40,000 out of these tires.
Oh, they do hurt the fuel mileage, I noticed a 2mpg drop in fuel mpg. I went from 18-20mpg to 16- 18mpg.
Hopes this helps.
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