WTB Byway TCS 700 × 40c Light/Fast Roll - Review

1. Introduction

The WTB Byway TCS 700×40c Light/Fast Roll is a tubeless-ready gravel and cyclocross tire designed for riders seeking fast-rolling performance on mixed surfaces like pavement, hardpack, and light gravel. Its slick centerline, angular grooves, and diamond-shaped peaks provide speed on tarmac and just enough grip when venturing off-road. Ideal for gravel commuters, adventure riders, and those wanting one tire to handle varied terrain.

2. Design & Build Quality

WTB packages this tire with its TCS (Tubeless Compatible System) and a lightweight, single-ply casing aimed at low rotational weight and enhanced comfort. It features Dual DNA rubber compounds—firmer across the center for efficiency, softer toward the edges for traction—and is available with SG2 bead-to-bead puncture protection for better air retention and slash resistance. Riders can choose between sleek black or retro tan sidewalls.

3. Performance & Features

On-road, the Byway excels with fast, agile handling, particularly on hardpack and paved sections. The tread transitions smoothly from slick center to agile side knobs, maintaining speed while offering cornering bite.  However, lab tests show its rolling resistance isn’t top-tier—some competitors roll more efficiently despite chunkier treads. Grip on loose or wet terrain and puncture resistance are moderate—adequate for dry mixed terrain but not optimized for aggressive gravel or muddy trails.


4. Pros, Cons & Verdict

Pros

• Fast rolling on pavement and hardpack, with fun, responsive handling
• Lightweight tubeless-ready design with Dual DNA construction and SG2 puncture protection
• Available in visually appealing black or tan sidewalls

Cons

• Rolling efficiency is average compared to other gravel tires
• Limited grip and traction on loose, wet, or technical off-road terrain
  Puncture protection and durability are just average—may not handle harsh gravel long-term.

5. Verdict

The WTB Byway TCS 700 × 40c Light/Fast Roll is a stylish, fast-rolling, tubeless gravel tire built for riders who spend most of their miles on hardpack and tarmac but still want the freedom to explore light gravel paths. If you're seeking efficiency, agility, and low weight for mixed-surface rides—especially in dry conditions—it's a smart choice. But if you need rugged durability, low rolling resistance in challenging terrain, or superior grip in wet/muddy conditions, you might consider alternatives better suited to those demands.