Surly's Knard is a 29 x 3-inch wide tire with the perfect tread for maximum traction plus low rolling resistance. It's designed for Surly's 50mm-wide Rabbit Hole rim (sold separately), and it will also play nice on rims down to about 35mm wide. But, your frame must have the clearance, Clarence.
Surly's Knard tire exists in a strange realm of fast and fat (29 x 3.0-inches wide). The tread consists of closely spaced blocks that grab terrain and hold it hostage until they're done with it. Run low pressure for mind-blowing traction or pump it up for lower rolling resistance, either way the…