Co-Motion Divide Tire Size: Read 700C, 29-Inch and ETRTO Together
Co-Motion Divide tire size descriptions combine 700c and 29-inch wording with a 45–55 mm tyre range in the manufacturer catalogue captured on 23 October 2026. The names describe different aspects of wheel and tyre sizing. For a replacement, begin with the complete markings on the actual tyre and rim rather than choosing from the larger-sounding number.
Decode Co-Motion Divide tire size notation
Schwalbe explains ETRTO notation using 37-622: nominal width first, then the tyre's inner diameter, both in millimetres. That example explains the code; it is not a statement that the Divide wears a 37 mm tyre. The same guide identifies the C in 700C with a 622 mm diameter.
Schwalbe also describes 29-inch tyres as using a 622 mm inner diameter. The inch label relates to approximate outside size and is imprecise. Consequently, 700C and 29-inch wording in the Divide description should not be treated as evidence that the family offers two different rim diameters.
Check width after establishing diameter
A matching diameter is only part of the replacement question. Schwalbe requires tyre width and inner rim width to suit one another, and directs owners to the rim manufacturer's tyre-type and pressure limits. The saved Divide family description does not identify the current Standard configuration's exact rim.
The Co-Motion Divide Bike listing identifies the model as Divide. Include its specific product link with photographs of the fitted wheel markings when asking about a replacement. Distinguish a proposed change from a like-for-like replacement; the requested tyre may need checks that the family name cannot provide.
Leave room for the installed system
The 45–55 mm family range does not establish that every 55 mm tyre clears every Divide with fenders. Schwalbe notes that inflation and expansion after mounting affect actual width. A nominal sidewall figure therefore cannot replace an assessment of the fitted tyre, frame, fork and accessories.
Nor does wheel-size wording establish tubeless compatibility or one correct inflation pressure. Obtain the applicable instructions for the identified rim and tyre. The wide tread visible in the historical show photograph supplies context, but no verified width, bead-seat measurement or tubeless approval. The Co-Motion topic and existing brand guide provide the wider touring background.
FAQ
Is 37-622 the Divide's specified tyre?
No. It is Schwalbe's example for explaining ETRTO notation.
Do 700C and 29-inch imply different inner diameters here?
No. Schwalbe associates those names with the 622 mm diameter.
Does the family range approve a tubeless conversion?
No. The actual rim, tyre and complete setup require their own confirmation.
Sources
Manufacturer catalogue, captured 23 October 2026 (https://co-motion.com/products.json?limit=250).
Schwalbe tyre-size notation (https://www.schwalbe.com/en/technology-faq/tire-sizes/).
Schwalbe tyre dimensions and rim requirements (https://www.schwalbe.com/en/technology-faq/tire-dimensions/).
Photograph credits and permissions
Photograph 1
Original title: Co-Motion Divide with 18/"-speed pinion drive. Very cool. #seattlebikeshow
Creator: Keith and Kasia Moore (keith_and_kasia); creator URI: https://www.flickr.com/photos/keith_and_kasia
Copyright notice: Photo attribution: Keith and Kasia Moore; no separate copyright notice found in original EXIF/XMP. Embedded ICC profile cprt text: FB (color-profile metadata, not an alternative photo author).
Original source URI: https://www.flickr.com/photos/keith_and_kasia/25165359659/
License / permission: CC BY-SA 2.0
License / permission URI: https://creativecommons.org/licenses/by-sa/2.0/
Modification notice: Original JPEG downloaded unchanged for private source review; no crop, retouch or format conversion performed here. Embedded c2/FB ICC profile and opaque FBMD Photoshop/IPTC metadata are present; no XMP conversion/edit history found. Earlier pixel processing is unassessed. Any later web conversion or resizing must be recorded truthfully before publication.
Source disclaimer: Historical show bicycle uploaded in2016, not proof of the specification, color, exact model year, condition or availability of the current Standard configuration listing. No endorsement by photographer or manufacturer is implied. CC license gives no warranties; trademark, privacy, publicity and other rights may still apply. ShareAlike obligations apply to adaptations.