700c, 27-Inch & 650c

Bontrager's R4 Aero Tire is all about making you faster and more efficient. Its 220tpi casing creates less drag and provides a supple road feel you'll love, while the tread minimizes rolling resistance and grips great in the corners. The R4 Aero also features integrated flat-tire protection. Plus, this amazing tire has Bontrager's unique aero wing design that saves you energy mile after mile. In fact, it has been tested to save over three minutes in the bike leg of the Ironman Triathlon! No wonder Keith Bontrager himself calls the R4, "the World's Fastest Tire."

Jump some curbs and find a new shortcut on the H5 hybrid tire. Sidewall knobs and water-shedding tread handle dirt and rain. Choose Hard-Case Lite or Ultimate protection. Key features - Excels on pavement and gravel paths - Lightweight, sub-tread material protects against punctures - Dual-layer, sub-tread material and sidewall reinforcement prevent punctures and cuts