Snowing today and went around a corner and the curb jumped out at my car and ripped a nice size hole in my tire and it's history.

Question. I have Pirelli Winter 210 SnowSports on for the winter. This is the second season i'm using them and all of them seem to have about 80% of the tread on them.

So can I just order one new from from Neal? or do i have to replace all of the tires?

Thanks
helm