With the winters that you have in Wisconsin, and the rest of the north, some of the worst advice is "it's all wheel drive, all seasons are fine bruh". That kind of shit is all over Facebook. Pay them no attention. Plus, if you won't buy snow tires for your STi, you probably shouldn't own an STi.
But seriously...a tire specifically for winter temperatures and snow has a very different rubber compound than all seasons or summer tires <--- which become rocks under 45*F.
Tread design is pretty similar across most brands. The intent is to evacuate snow from the tread as quickly as possible. Blizzaks have silica (basically really fine sand) mixed in with the rubber compound to provide more bite on slippery surfaces. Also, if you look really close, you'll see these fine slices cut into the tread that look like pages in a book. These flex under load and increase the surface area of the tread against the ground.
The rubber itself is super soft; you can easily manipulate it with your thumb. When you find yourself driving on one of those days in the winter where the roads are clear and dry, take it easy on the throttle and the high speed turns. If I'm not careful with my right foot, I'll smoke my Blizzaks. That's expensive, don't do that.
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But seriously...a tire specifically for winter temperatures and snow has a very different rubber compound than all seasons or summer tires <--- which become rocks under 45*F.
