Proterra Tough i30 wheels keep the trail in check while everything else blurs out at the edges. Reinforced by our proven Dual I-Beam technologies, Proterra Tough rims have a 30mm internal width to provide more tire volume while increasing sidewall support at lower pressures. High-quality sealed EZO bearings are designed to withstand seasons of aggressive riding, and the responsive 6-pawl hub provides the neat 5 degrees of engagement you demand when cornering. Choose Proterra Tough when you need wheels that won't let you down. Use: Trial/Enduro The rims deserved to be paired with high-quality hubs, which further enhance the performance of this lightweight, reliable wheelset. Frequency hubs feature a low-friction 6-pawl design that alternates between two sets of 3-pawl groups to provide responsive 5-degree hub engagement. A durable nylon strip sits between the rim and the tubeless tape to prevent the tubeless tape from pressing into the spoke holes and ensures a smooth connection between the tire and rim. The smooth surface facilitates tire installation by preventing air from escaping around the bead with each indentation during inflation. The Solid Strip also protects the airtight system from punctures in the event of a broken spoke. Need assurance that your gravel wheels will be lightweight but still last through seasons of riding? Proterra Light i23 and i25 wheels offer long-term reliability thanks to their three-cross lacing. Enduro riders worldwide have adopted 30mm as their primary rim size for tires with the most common widths of 2.4-2.5. Most trail and enduro tires are now designed to fit 30mm rims, which will optimize air volume, sidewall support, and tire profile. As XC becomes more aggressive and companies offer wider XC tires, these lightweight 30mm rims are also a great choice for XC riders who prioritize confidence over cutting grams. Proterra wheels are hand-built in our wheel manufacturing facility. Our team of wheel wizards assemble, tension, and wrap each Proterra with the same attention to detail they apply to their own wheels. This hands-on approach allows us to confidently stand behind our wheels as the most reliable on the market. TUBELESS COMPATIBILITY: TCS is our standardized rim/tire system for tubeless tires, designed to meet international ETRTO standards and deliver unmatched tubeless performance and reliability. TCS components reduce weight, increase traction, virtually eliminate punctures, and have established themselves as the most reliable tubeless system available. Our TCS system includes tires, rims, tape, sealant, and valves to provide a complete package of unmatched tubeless performance and reliability. Every Proterra rim uses our TCS (Tubeless Compatible System) and ships with Solid Strip, TCS tubeless tape, and black alloy valves installed. This means all Proterra wheels are tubeless-ready and sealant right out of the box.