[washufiddyfo]

I bought a set of winters from a forum member here. They are Dunlop Winter Sports 225/55 but they were on a second set of rims at 17". I have only used them for one winter so far, but they were fine for winter performance.

However, being R17 instead of R18 puts them a full inch smaller diameter than yours, so I can't speak to any experience with going up almost an inch from stock.

Let us know how the Blizzaks turn out for you. I might get another season out of these but will probably be replacing soon, looking at those and the Sottozero.