Of topic slightly, love these:
Michelin LTX® M/S2 LT265/70R17/E
Have them on my E350, Bronco (M/S), and my wife's Dodge Dakota.
Compared them with the AT/2 here:
http://www.michelinman.com/tire-selecto ... ight-truck
The longer wear on the M/S2 swayed me and we are getting the advertised mileage on my wife's Dodge (been on there the longest).
The M/S2 has one more 32nd of tread depth, but mostly it is the siping which makes it, IMHO, a great allround tire including Winter - not a true Winter studded tire - but a great allround tire including snow and rain in Winter.