27.5″ x 2.2″ (650B x 55) Umtanum Ridge TC Tire

The ultimate 650B bikepacking tire is designed for rides where you don’t know what lies ahead. Umtanum Ridge a steep and lonesome ridge in the central Cascade Mountains. It is so remote that European settlers never renamed it, and it carries its ancestral Native American name to this day.

Road.cc awarded the Umtanum Ridge their coveted ‘Recommended Tyre’ badge and commented: “Fat, supple tyre for all manner of off-road use, and fast and quiet on-road.”

The Umtanum Ridge’s large and widely spaced knobs grip tenaciosly when conditions get tough. On pavement, it rolls and corners like a slick thanks to its large and strategically placed knobs that don’t squirm and always put the same amount of rubber on the road. The Umtanum Ridge features our noise cancellation technology: The staggered tread blocks create overlapping noise frequencies that partially cancel each other. This means that on most surfaces, the Umtanum Ridge doesn’t just roll as fast as a slick – it’s also as quiet as a slick.

The Standard casing is our more affordable option: comfortable and fast, yet also strong to withstand considerable abuse. The Extralight casing takes the performance, comfort and feel of your bike to an entirely new level. The Endurance casing is reinforced for extra sidewall protection and puncture resistance, while retaining the speed and comfort for which Rene Herse tires are famous. The Endurance Plus casing provides the ultimate in sidewall protection for extremely tough conditions.

The Umtanum Ridge is tubeless-compatible. For tubeless setup, we recommend SealSmart sealant. When used with tubes, we recommend SV13 or SV14 tubes.

Pro Tip: The noise cancellation improves further during the first 30 miles (50 km) as the sharp edges of the knobs wear off a little.

TECHNICAL SPECS

All models feature:
Clincher, folding bead
Tubeless-compatible
Recommended rim: 19 - 30 mm (inner width), hookless or with hooks
Maximum pressure with tubes: 55 psi (3.8 bar)
Maximum recommended pressure – tubeless: 55 psi (3.8 bar)
Actual width on 21 mm rim (internal): approx. 56 mm
Actual width on 23 mm rim (internal): approx. 57 mm
Extralight casing: +1 mm width
Tubeless: +0.5 mm width
Made in Japan

• Standard casing
  Supple casing
  Tan sidewalls
  570 g
• Extralight casing
  Ultra-light, ultra-supple casing
  The ultimate in speed and comfort
  Tan sidewalls
  520 g
• Endurance casing
  The same ultra-fine threads as our Extralight casing, but in a denser, stronger weave
  Protective belt under sidewalls and tread
  Ideal for rough gravel and tough conditions
  Dark tan sidewalls
  615 g
• Endurance Plus casing
  Extra-tough casing with ultra-strong threads
  Protective belt under sidewalls and tread
  The ultimate in sidewall protection
  Dark tan sidewalls
  625 g