<https://www.cadillacforums.com/threads/what-size-winter-tires.5599/>
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"Still thinking about winter tires.  For those who have bought them for 16\" wheels, what size did you buy?  Standard size is 225x55, but usually narrower tires are better in the snow.  I'm thinking 205x60 if I can find them."
<https://www.cadillacforums.com/threads/what-size-winter-tires.5599/>