Boston, the original hotbed of North American 'cross and home to some of the nastiest courses. If you're flying into Boston's Logan airport, you better be ready for rain, roots and mud. The BOS, even more aggressive than the PDX, has buttressed side knobs for outstanding traction in super muddy corners and off-cambers, plus center tread that's all bite when it comes down to a tractor pull.
- Clincher size: 33 x 700
- Weight: 397 grams tubeless ready
- Tractor style tread for the harshest mud
- Buttressed side knobs for excellent corning traction
- Tubeless ready with proprietary tubeless casing
- 120 TPI folding lightweight and aggressive
Heavier than folding (adds rotational weight)
Harder to store and transport
Easier to store and transport
Tubeless-ready tires are compatible with both tubeless-ready and standard rims. When the tire is mounted on a tubeless-ready rim with special tubeless rim tape, valve, and sealant, the tire and rim form an airtight chamber that no longer requires a tube. This lets you run lower tire pressure with less fear of pinch flats and without the added weight of a tube. Lower tire pressure has many benefits, including greater traction and lower rolling resistance over rough surfaces. The tire can also be used with a tube if you mount it on a standard, non-tubeless-ready rim.