Not sure if true or not, but "n-spec" is a Porsche kickback (someone legit in the tire biz told me but not sure...). The industry I am in (Outdoor/Sports/fashion) has similar programs that are grey or go unsaid, Not sure what to believe but felt in my gut that Michelins were a better all around winter tire and more durable. If I saw more than one review (globally) that put Pirelli over Michelin, then I would have sucked it up and ate the one to maybe two season durability of Pirelli but the results were overwhelmingly Michelin. Nokia came up quite a bit but there are certain brands that get better internet buzz for a variety of reasons - not all for the right reasons... With winters the way they are these days, I want a solid winter and durable tire for not only snow and ice drives to Whistler, but also the shoulder seasons with amazing dry driving on Hwy 99 south and north...