Proterra Light i25
TCS (Tubeless Compatible System) is our industry-leading tubeless rim/tire system designed to international ETRTO and ISO standards.
6069 is the perfect aluminum alloy for bicycle rims due to its high tensile and fatigue strength, minimal weight, and excellent anti-corrosion properties.
Spoke holes are drilled at an angle to match the natural spoke path between a rim and hub. Eliminates binding and lateral loading of the nipples to increase wheel durability.
Rim ends are hydraulically pressed over an extruded aluminum insert that matches the inner cavity of the rim and is further reinforced by industrial epoxy.
Installed between the rim and tubeless tape to prevent tape from sagging at each spoke hole and make tire inflation easier while also preventing puncture from a broken spoke.
Sloped rim valley allows the bead of the tire to easily and smoothly move into place during installation and inflation.
Internationally standardized to ensure rim and tire compatibility are as consistent and user-friendly as possible for both WTB’s products and those of our competitors.
Freehub ratchet system quickly alternates between two groups of three pawls each to provide quick engagement and trusted durability.
SPECIFICATIONS: (Max spoke tension range: 110-120KgF)
*Proterra hub dimensions can be found on our Resources and User Manuals page.
**Proterra wheel weights include the Solid Strip, tubeless tape and valve installed on each wheel.
Wider rims will cause a tire to also have a wider width, with more air volume within the tire and a flatter tire tread profile than designed for. As a general rule of thumb, a 2mm increase or decrease of inner rim width will result in a tire section width increase or decrease of 1mm. For example, our Nano 40 tire has a tire section width of 40mm on a 21mm inner rim width, however it will have a tire section width of 41mm on a 23mm inner rim width.
All WTB wheels are sold with TCS Tubeless Tape preinstalled. If you need to replace it at any time, WTB recommends using tape that is 5mm wider than your inner rim width. For example, an i30 rim would require 35mm TCS Tubeless Tape.
All WTB alloy rims and wheels are best paired with a 34mm valve stem, which is preinstalled on every Proterra wheel.
rims and wheels are best paired with a 34mm valve stem, which comes preinstalled on every Proterra wheel.