The Surly Knard Adventure tire is an all-rounder designed for going fast over varied terrain, now in a super light 120 TPI casing. Its tread is made up of low, closely spaced knobs that dig into soil, rocks, and roots to find traction, wet or dry. With its increased width, the 41mm Knard more easily conforms to the ground surface and over any irregularities, providing a large contact patch to further improve grip.
The Surly Knard 700c Adventure tire measures 41mm wide, with a bead seat diameter of 622mm. Surly recommends the Knard for use with 23-30mm rim widths. Also available in a 33 TPI version.
A guide to common bike tire sizes and how to find the tires that will fit your bike.
An introduction to cyclocross tires.
Understanding older bicycle tire sizes.
A useful chart for determining the tire size you need for your bicycle.
Tips for proper bicycle tire mounting and tire safety.
A guide to understanding tire width.
A guide to understanding bicycle tire tread patterns and what you should look for.