Bergamont Grandurance 8 Tyres: Separate 45-622 from a Tubeless Setup
Bergamont Grandurance 8 tyres are listed as Schwalbe G-One Bite, RaceGuard, 45-622 on the inspected model 291088. The detailed entries also say Tubeless-Easy and name a Kenda SV28 tube for each wheel. A tyre’s tubeless designation therefore should not be read as confirmation that the complete bicycle was supplied without tubes.
Bergamont Grandurance 8 tyres: preserve the size code
Schwalbe’s own sizing explanation describes the ETRTO format as width followed by the tyre’s inner diameter, in millimetres. Reading 45-622 in that format identifies the nominal width and matching diameter more precisely than a broad “28-inch” description.
Retain the actual sidewall markings when asking for a replacement. The number in a catalogue identifies the documented build, while a photograph or seller’s memory may describe an earlier tyre. Ask what is fitted now before ordering a tube or planning a change.
Distinguish a compatible tyre label from the whole system
A complete tubeless arrangement involves more than the word on a tyre listing. Have the exact rim, tyre, valve and sealing arrangement checked against their applicable instructions. This article does not establish that an owner’s current wheel has been prepared or inspected for that setup.
The official tube entry is useful for understanding the specified original configuration. It is not a substitute for checking the required tube dimensions and valve on a modified wheel. Keep the manufacturer and complete product identification attached to any replacement enquiry rather than matching an isolated stock code from another brand.
Do not turn stock width into maximum clearance
The inspected page describes generous clearance but does not supply a numerical maximum tyre width in its specification text. The listed 45-622 tyre is consequently a documented equipment size, not proof that a wider proposal will clear the frame, fork and any fitted mudguards.
If a wider tyre is the goal, give the dealer the exact frame identity, rim and proposed tyre. Ask for the applicable clearance requirements and a check of the complete arrangement. A nominal width cannot establish every installed dimension, and the narrow historical road tyres pictured here provide no Grandurance measurement.
Likewise, no single inflation pressure is inferred from 45-622. Use the actual tyre and rim instructions for the identified system, with the intended load considered, rather than copying a pressure from an unrelated road bicycle.
FAQ
Does the page list a tube as well as Tubeless-Easy?
Yes. Its detailed tyre entries name Kenda SV28 tubes.
Is 45-622 a published maximum-clearance figure?
No. It is the inspected build’s listed tyre size.
Can the historical Prime photograph identify Grandurance tyres?
No. It shows a different road bicycle and supplies no clearance measurement.
Keep Bergamont Grandurance 8 tyres tied to their exact markings and wheel setup. Browse the Bergamont owner references or use the range overview when distinguishing an older model.
Primary documents: Primary source 1 (https://www.bergamont.com/gb/en/product/bergamont-grandurance-8); Primary source 2 (https://www.schwalbe.com/en/technology-faq/tire-sizes/).
Photograph credits and permissions
Photograph 1
Original title: Bergamont Prime Team Carbon.jpg
Creator: Landirenzo-7er; source-supplied author URI: https://commons.wikimedia.org/w/index.php?title=User:Landirenzo-7er&action=edit&redlink=1
Original source URI: https://commons.wikimedia.org/wiki/File:Bergamont_Prime_Team_Carbon.jpg
License / permission: CC BY-SA 4.0 International
License / permission URI: https://creativecommons.org/licenses/by-sa/4.0/
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