Just In – Donnelly GJT 29 x 2.5 Mountain Bike Tire

by Brian Mullin on June 7, 2022

donnelly_gjt_tire

The Donnelly GJT is a large-knobbed trail tire inspired by the big, fast, and rough trails found in the Grand Junction and Fruita, Colorado trails of which the tire is named.

FYI – GJT is the airport code for Grand Junction!

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It features big center knobs to help the tire attack the trail while keeping good traction and braking.

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It has very supportive side knobs, allowing you to confidently roll the tire to the edge.

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The tire also features a protective layer to help eliminate punctures.

Thoughts => I have two big rides on the tires, and so far, I like the GJT. For a big tire at 980 grams, it’s a reasonably lightweight beast. The tread pattern offers great traction and braking and loves to roll into turns. It might not provide the maximum traction while flying downhill in my local deep gravel trails (not much does), but in loam and the deep woods, they are pretty tacky. Where they shine is in climbing and anywhere you require snappy acceleration. They love to fly and have been durable against the rocky terrain they have encountered.

I am looking forward to some more time on the GJT. The Tan sidewalls look pretty darn sharp!

donnelly_gjt_specs

  • A row of big center knobs helps the tire attack the trail, keeping good traction and braking.
  • The alternating center and shoulder knobs make for a tire to be rolled easily from the center to the outside.
  • Supportive side knobs allow you to confidently roll the tire to the edge in the corners.
  • Sidewall protection lets you charge through the trails
  • Tire Diameter: 29″
  • Width: 2.5″
  • Bead: folding
  • TPI: 120
  • Tire Type: tubeless-ready
  • Weight: 970g.

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