These Dillinger 26″ FatBike tires are 4 inches wide and have 240 aluminum carbide studs. The tread is fairly aggressive and does a good job of gripping snow, so whether you’re rolling over powder or ice these tires will help keep you upright.
The rubber has a 120 tpi so the tires are surprisingly not that heavy. Well, relatively speaking at least.
They are expensive though. At $300 a piece there’s no other way to put it, but if these are what gets you through the winter they may well be worth it.