700c, 27-Inch & 650c

Bontrager's R4 Road tire is a high performance race tire that is built to go fast! The round profile and lightly textured tread low-rolling resistance and grip like glue in the corners. The 220tpi casing and folding beads deliver a wonderfully supple ride and lighten the tire considerably. You also get sub-tread protection against flat tires and equally impressive, Bontrager's unique aero wing design that improves airflow so that the R4 actually saves you energy on every ride.

AW3 is the set-it-and-forget-it tire for road riders and commuters. It rolls fast and keeps the flats away with durable Hard-Case puncture protection. Plus, it's made with a proprietary TR-Endure rubber compound and a lightly treaded design for confidence and traction in all conditions. - Leading puncture protection with traction for confidence in all conditions - Improved Hard-Case puncture protection provides best-in-class defense against flats - Proprietary TR-Endure compound delivers long lasting-traction in all conditions - Smooth-rolling, lightly treaded design with siping channels for traction and all-weather confidence - 60 TPI - Folding bead - Clincher

For the roads less traveled A fast-rolling gravel tire that offers consistent traction. The GR1 Comp gravel tire's lightly-treaded design makes for a fast-rolling tire that still offers consistent traction on rougher, gravel-covered roads and paths. - Excels in fast and firm conditions - Fast-rolling and predictable cornering - 60 TPI - Wire bead - Clincher