There was a time not long ago that choosing a fat bike tire was a rather easy decision. Will you have the Larry or the Big Fat Larry, if your frame will accept it. With the mass popularity of Fat Bikes just about every tire manufacturer has now stepped into the game for 2015 and your options are getting huge as are rims but that is another however closely related discussion.
When Surly first set out to bring the original Pugsley to market it had to do all in one package, a utility bike with the influence of the Iditarod bike race so the original Endomorph & Larry tires had low rolling resistance but the grip/cornering performance? Well that was what we had so play with the pressures and don’t gettoo enthusiastic in the corners cause your likely to end up in the bushes.