I have used these Blizzak WS70s through three northern Ohio winters now and they are nothing short of amazing. I only use them for about 4 months per year and the tread still looks pretty good on them. I expect to get at least 30,000 miles on them at the current rate. It is very flat with straight roads where I live though. The traction that these get in the snow when mounted on my Subaru Forester 2.5x has impressed everyone who has rode in the vehicle. I can accelerate away from a stop light on a typical snow-covered road at nearly full power without ever engaging the traction control. Stopping distance and cornering in snow and ice are also much-improved over the stock all-season tires. The downside to this where I live is that I am now always concerned that the vehicle behind me will have no choice but to rear-end me if I brake too hard. These tires are made of a very soft compound, so treadwear isn't expected to be great, but another mild downside is that when first switching to them from an all-season tire, they feel a bit squiggly when driving on pavement. It takes a few days to get used to the different feel, but then you hardly notice it at all.