Product Spotlight – Big Fat Knards


Look what just came into the Colonel Steve Austin, Fat-Bike test labs nestled here in America’s Dairyland. The great and powerful Surly Knard, super-sized to a full 4.8 inches wide. This is a tire that spent considerable time in development, which makes their arrival to us all the more special! The photo above shows one of our test tires mounted to a Surly Clown Shoe. The BFK’s measured 117 mm wide tread to tread with the casing coming in at 118 mm, while freshly mounted to the 100 mm wide Clown Shoes.


Surly also offers their Knards as a 26+ 29+ and a 3.8 x 26 fat-bike tyre. The 4.8’s mimic the tread pattern of it’s smaller cousins, shown above and below with a full face of fresh tire whiskers. Before we mounted up our pair of test tires, we tossed them onto our Park Tools digital scale and they came in at 1385, 1382 g each. When we laid the tire out flat, the tread measures 150 mm wide and the bead to bead measurement was 270 mm. This is a rather large and a rather light (for it’s size) tire.


Our set of BFK’s are going to get tested by one of our most decorated members of the Bike Black Ribbon Test Pilot Program, Major Chris Zito. Zito will be testing the new meat on his Surly Moonlander. Stay tuned to fat dash bike dot come for  Major Zito’s thoughts about his brand new set of big fat knards! That report should be available in about a month or so… or minus seven to ten days, or thereabouts.

For more information about all of Surly’s Tires, Bikes and Gear visit –

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6 Responses to Product Spotlight – Big Fat Knards

  1. Cam April 6, 2015 at 3:58 am #


    Can Major Zito run this set tubeless? Running tubes in the summer with 120tpi tires can lead to many flats for me. Would like to run these on my Moonlander for the summer but I dislike thorns and other foreign objects deflating my huge tires on the trails. With clown shoe rims and Surly tires I am afraid of running “ghetto tubeless”.


    • Napalm Dog April 13, 2015 at 1:57 pm #

      Hey Cam, your tubes should have removable cores. Inject some Stans in there, it will alleviate thorn problems. I run about 3 to 4 ounces, it clogs pretty much any thorn puncture!

  2. Ernesto April 7, 2015 at 1:51 pm #

    These tires are scruffy and smurfy! So galas the tire techs from Surly put these into production. I used to kneel as the foot of Mount Culo that something like this would be made for us mortals.

    Bruce Lee’s a la choy smothered in Danny Trejo sauce would approve.

  3. Dan April 8, 2015 at 12:28 pm #

    Don’t forget that knards also come in 700×41! Collect them all!

  4. Rob May 11, 2016 at 4:51 pm #

    Do you think there is enough clearance to run 26×4.8 Knard on stock Surly Necromancer?

    • Gomez May 11, 2016 at 8:35 pm #

      probably not

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