Tioga Black Turtle PRO 2.2in review£25.99

For use in everything up to and including liquified mud

BikeRadar score4/5

Designed for downhill when it's comically muddy, the Black Turtle gets a cartoon caricature spike tread for amphibious action.

At 2.2in wide, it's narrow enough to dig deep into slop and find the firm bits underneath, and the tall, base buttressed spikes help give it outstanding penetration. The soft compound, slow rebound rubber and file tread tips mean they don't immediately ping off rocks and roots like most spikes either.
You need to use plenty of pressure to stop them buckling but even then there's a noticeable smearing/ wandering sensation in corners as they flex sideways. You'll only want them on if it's proper wet, though.

Guy Kesteven

Freelance Writer, UK
Guy started filling his brain with cycle stats and steaming up bike shop windows back in 1980. He worked the other side of those windows from '89 while getting a degree in “describing broken things covered in mud" (archaeology). Dug historical holes in the ground through the early '90s, then became a pro bike tester in '97. Guy has ridden thousands of bikes and even more components the world over since then and can remember them all in vivid, haunting detail. Can't remember where the car keys are, though.
  • Age: 45
  • Height: 180cm / 5' 11"
  • Weight: 68kg / 150lb
  • Waist: 76cm / 30in
  • Chest: 91cm / 36in
  • Discipline: Strict sadomasochist
  • Preferred Terrain: Technical off-piste singletrack and twisted back roads. Up, down, along — so long as it's faster than the last time he did it he's happy.
  • Current Bikes: An ever changing herd of test machines from Tri bikes to fat bikes and everything in between.
  • Dream Bike: His Nicolai Helius AM custom tandem
  • Beer of Choice: Theakston's Old Peculier (not Peculiar)
  • Location: Yorkshire, UK
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