I know I have a warranty, but anything else I should be on the look out for. I only have the 18" tires and they are oddly continental pro contact 235/40 18. Car has only 19,500 but I will definitely changed those to Michellin, Pirelli, or at least Continental DWS extreme contact when needed as I live in the mid atlantic.

 

You might want to look at cost and reviews of Vredestein (Dutch) A/W tires - they are what I'm going with on a 2015 V60 (my wheels are 17", don't know if they do 18")