I have an opportunity to buy 4 like new Nokian Vativa M/T 265/70/17s for my 2007 F150. $450 for four. My truck has 275/65/18s on it now but the Nokian's would only be for winter on a set of stock steel rims. Any problems except the speedo being off a bit?

 

The tire size is pretty close in height. The 17" are going to be a little shorter on paper, but that Nokian has some serious tread on it.