Frog Bikes Track Tyre Markings: Read the ETRTO Entry

Frog Bikes Track tyre markings deserve a closer look before a replacement is ordered. Podium's specifications list three different ETRTO numbers across Track 58, 67 and 70. A search for a small racing tyre is not enough: write down what is actually on the bicycle, including the full sidewall marking, and have the rim and replacement checked together.

Frog Bikes Track tyre markings: Keep the ETRTO entry

The Track 58 page names a Kenda K1018 tyre with ETRTO 451. Track 67 names Kenda K191 with ETRTO 540. Track 70 names Kenda K196 with ETRTO 559. These are the entries in the distributor's documents; they do not prove that an unfamiliar used bicycle still has its original wheels or tyres.

Preserve the complete marking rather than writing only the model number or an approximate inch size. Photograph both sidewalls if a label is worn or partly hidden. Include the rim's readable identification in the enquiry. A supplier can then assess the actual combination instead of interpreting a description such as “small Frog racing wheel”.

Handle conflicting catalogue labels carefully

The Track 67 page's short introduction calls it a 20-inch bike while its tyre field says 24 inches. Track 70 also has inconsistent nominal wording between its heading and tyre entry. Those conflicts are a reason to verify the physical markings, not to silently correct the catalogue or publish a guessed replacement size.

Record width, valve and pressure separately

A tyre order and a tube order need more information than one wheel-size number. Copy the complete tyre size and identify the tube's valve. Ask the stockist to confirm the tube's stated size range and valve suitability for the rim. A matching brand name on the packet does not establish either detail.

The Frog-branded owner's manual saved by North Bikes directs owners to the tyre sidewall for its pressure range and recommends a pump with a pressure gauge. It also explains that the pump fitting must suit the installed valve. That general guidance does not supply one Track pressure setting, and this guide does not turn its pressure-conversion table into a recommended inflation figure.

Make the replacement request complete

Send the stockist the bicycle model, full sidewall text, rim details and intended session. Explain whether the job concerns a worn tyre, a damaged tyre or a punctured tube. Those are different requests. If a previous owner has fitted another wheel, say so explicitly and include its paperwork if available.

Ask the session organiser about tyre requirements before buying a different tread or construction. A distributor's original equipment list does not approve every alternative, and a tyre that can be purchased is not automatically appropriate for a particular venue. Confirm compatibility before fitting or inflating it.

For a broader account of the range, read the Frog Bikes brand guide; the Frog Bikes topic gathers related ownership articles. Treat Frog Bikes Track tyre markings as the beginning of a precise replacement enquiry, with actual parts supplying the final evidence.

FAQ

Which ETRTO number does Podium list for Track 58?

Its tyre field gives 451. Check the installed tyre and rim before selecting a replacement.

Does this guide recommend one pressure for all three models?

No. Use the installed tyre's instructions and obtain a suitable setting for the actual rider and use.

Should an inconsistent inch label be silently corrected?

No. Keep the discrepancy visible in the enquiry and have the actual wheel identified.

Sources

The tyre fields list ETRTO 451, 540 and 559. Podium’s nominal inch descriptions contain discrepancies. Frog’s older owner manual, pages 36–37, separately explains sidewall pressure information and matching a pump to the installed valve; it supplies no universal Track pressure. Podium Frog Track 58 (https://www.podium.co.jp/lineup/12779); Podium Frog Track 67 (https://www.podium.co.jp/lineup/12782); Podium Frog Track 70 (https://www.podium.co.jp/lineup/12783); Frog owner manual, manufacturer-branded older copy hosted by North Bikes (https://cdn.shopify.com/s/files/1/0224/5142/1256/files/Frog_Owners_Manual.pdf?v=1765670500). Actual saved sources retrieved and read 27 October 2026. Distributor specifications can change; no model year is inferred.

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