Reserve Wheels Reserve 30 HD AL Rim - 27.5" Disc Black Alloy 32H. Reserve aluminum rims have been designed and developed to provide a product that rivals the performance of the much-loved carbon wheels but at a much more accessible price point. With an industry-leading lifetime guarantee you can feel confident you will be enjoying these rims for years to come.Backed by a lifetime warranty TECH SPECS Color Black Rim Width (Internal) 30 Brake Track None Manufacturer Spec ERD (mm) 558 Weight 540 Wheel Size 27.5" Defined Color Black ISO Diameter 584 / 650b / 27.5" Hub Drilling 32 Rim Material Alloy Tire Type Tubeless Ready Valve Presta Rim Center Offset (mm) 4