WTB KOM Tough i30 Rim

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Simply put, WTB KOM Tough rims were built for bashing. An excellent choice for adventure gravel bikes, the WTB KOM Tough i30 rim is dependable for fully loaded touring or bikepacking.


  • Proven on the toughest tracks of the Enduro World Series, depended on for daily trail rides, and trusted while bikepacking in remote regions of the world
  • Most trail and enduro tires are designed to be installed on a 30 mm rim; doing so will optimize the air volume, sidewall support and tire profile of those tires
  • Dual I-Beam Support: 2 vertical supports within the inner cavity drastically increase the rim's strength and lateral stiffness for aggressive riding
  • These additional reinforcements counteract spoke loads, which improves stiffness and minimizes deflection in rocky, unpredictable terrain
  • 4D angled spoke drilling eliminates binding and lateral loading, and disperses tension more evenly over a greater area
  • Extruded from top-tier 6069 aluminum alloy for unbeatable durability at a reasonable weight
  • Durable nylon TCS Solid Strip lies between the rim and tubeless tape to prevent the tape from pushing into the spoke holes, ensuring a smooth interface between tire and rim
  • The smooth surface makes it easier to mount a tire by preventing air from escaping around the bead at each indent during inflation
  • Solid Strip also protects the airtight system from puncture in the case of a broken spoke
  • TCS (Tubeless Compatible System) is a standardized tubeless system designed by WTB to meet international ETRTO standards
  • TCS components reduce weight, increase traction and virtually eliminate flats for a dependable tubeless system


View all WTB Bike Rims

Technical Specs

Best Use

Mountain Biking


Tire Type

Tubeless Ready

Wheel Size

27.5 inches

Spoke Hole Count


Internal Rim Width

30 millimeters

External Rim Width

34 millimeters

Effective Rim Diameter

570 millimeters

Rim Depth

18.1 millimeters

Brake Compatibility

Disc Brake

Rim Material


Rim Bead Type


Rim Symmetry


Valve Type


Tubeless Compatible



531 grams



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