Hi Tony:
I am most likely NOT the perfect person to ask about tires in heavy snow because I live in SoCal. But, I have ALWAYS been a Michelin guy for 40 years. We had Michelins on our 2012 Expy and took it snow skiing at Mammoth Mountain often. They worked excellent in the snow (but maybe only 1 to 1-1/2 foot deep, most times) and when I stepped out to put on CHP mandatory tire chains, the slope was so slippery that I couldn't stand up but the Michelins were NOT slipping 'without' chains. I recently also bought a 350 Ford Transit Van 148WB, LR, cargo van and it came from Ford w/ OEM 16" Continental VanContact A/S Tires on it. I decided to just run them until it was time to buy 4 new Michelins. My Transit only has 4900 miles on it and they are 1/2 way worn out, already! Loaded w/ tools and parts, my van weights in the 8200-8500# range (3500-4000# more than an empty Expy) but these 16" Continentals are wearing awfully FAST, it seems to me. On my 2013 E350 Econoline Van (same 8200-8500# weight), I always ran 16" Michelins and could get 50,000-55,000 miles out of them, by the time they got down to 20-25%. So, I don't know how many miles you may get out of Continentals on your Expy?? (however, your choice of Continentals, are a different model) Never have driven my Transit in snow but in heavy winter CA rains here, my Continentals have hydroplaned on the freeway at 65MPH a few times. No loss of control (thankfully) but a little disconcerting, to say the least. (never had that happen w/ my Michelins) On dry pavement, these Continentals handle absolutely fine. No criticism intended on Continentals, just my personal recent experience with them FYI & thought. Thanks, Lance