R4 Road

Information from: http://bontrager.com/model/09126.

The R4 tire combines Bontrager's new low rolling resistance 220 tpi casing, proven Plus puncture protection and Bontrager's exclusive aero wing technology for an unparalleled riding experience.

Features

Integrated sub-tread puncture protection (Plus)

Bontrager-exclusive aero wings for advanced aerodynamics

220 tpi casing provides unparalleled comfort, light weight and low rolling resistance

For higher performance, racing purposes only. Not intended for everyday use or training.