I've been through a journey on tires with my LC, having run the stock michelins, then the Cooper Discoverer R+T, then the Nokain Outpost NaT, and now the Bridgestone Dueler Ascent ATs. I'll be preparing a writeup as time permits and have a lot of data to go with it including MPG impact for each. Here is the vastly abbreviated version, all are 265/70/18 and stock (116) load rating:
- Cooper - very quiet, fantastic in the snow, aggressive sidewall, cost me 2-3mpg freeway at 80mph and 1-1.5mpg in town. Ride was very firm, with some pot holes and imperfections in the road jarring to the ride otherwise no complaints. I ran these on my GX460 and loved them and they are highly rated for a reason. Do not have full depth sipes.
- Nokian - the loudest tire I've had since I ran Super Swampers on my jeep in high school, it's worth noting that others have reported they are quiet, but even Discount Tire said they could hear me coming down the road. Balanced great with none more than 1.5oz, fantastic in the snow and a good ride that soaked up bumps well. Full depth sipes. I never got above 16mpg freeway or city (previously 24 road/20 city with the stock michelins), by far the worst MPG of the three. IMHO the best looking of the three and very aggressive in person with thumb sized gaps in the tread, they look like a mudder in person and the photos online do not really accurately represent them.
- Bridgestone - very quiet and comparable to the Coopers in this regard, so far very good in the snow and ice but need more testing this weekend at the resorts. Ride quality is the most forgiving of the three while being nicely controlled around town and the freeway, they soak up bumps and imperfections in our terrible winter roads nicely. They are firm and controlled but not as 'jarring' as the Coopers. Sidewall looks great but in my opinion they look the least aggressive of the three. Only have 400mi so far on them but I appear to have gained back most of my MPG lost previously with the other two.
So far I have no complaints on the Bridgestone with much better snow performance and looks than stock while retaining the stock driving characteristics and very close to the same MPG. I have found these LC's are very MPG sensitive to changes in the tires (weight and width and rolling resistance), much more so than my GX460 with the V8 or other naturally asipirated vehicles. I attribute this to being in boost more often.
Will post an update here when I do a full writeup, HTH with your decision.