Bought some used blizzak snow tires for $100 with only 2 winters on them. Perfect tread really. They are 215/55/17. So a little more narrow and less sidewall...100% ok right? stock is 225/55/17 so i expect the will be fine

 

215/55/17 are going to be a little taller. So speedo will be off by about 1 mph. Shouldn't be anything to worry about though.