Seems you have your answer now. Up to you which size you used next as to whether the dealer changed it you'd have to check with them or customer service who has or should have access to the build sheet on you VIN. Narrow tires are better on the snow since wider tires float more with less pressure on the surface.Thanks for the welcome.
The vehicle is a 2007 Jeep Compass Limited. As previously stated, the tires on their now (on the Jeep when I bought it) are 235/55/18. The door does say the original tires were 215/55/18.