[ThrowawayTestr]

Even after the streets are plowed there's still a bit of snow on the main roads and a lot on the side roads. Maybe you live in a place with really mild winters, but my car would have drifted into a ditch many times this winter if I didn't swap my tires.

[literalAardvark]

No one is saying to drive all year with your summers. Those will glass in winter.

[ThrowawayTestr]

Assuming every road you drive on in the winter will be perfectly plowed and salted is a great way to end up in a ditch.

[literalAardvark]

It's a 10% grip difference, which is actually in your favour on cleaned roads and only against you on snow.

I really don't understand how this is so difficult to grasp.