Free printable · Measure parts
Scooter tyre size decoder and record sheet
Every field on a scooter tyre sidewall, what it means, and a record block for the sizes currently fitted to your machine.
Layout preview of page one. The PDF itself is typeset text, not an image.
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3 pages. No account, no sign-up, no newsletter. Print it, copy it, hand it to somebody else.
Version v1.0 · September 2026. Opens in your browser's PDF viewer, where you can print directly.
The problem it solves
Scooter tyres are marked in two incompatible systems — a metric one like 130/60-13 and an older inch one like 3.50-10 — and the same machine often has one of each, front and rear. Owners read the wrong field as the size, order a tyre that will not go on the rim, and only find out at fitting.
Who it is for
- Anyone ordering tyres for a machine with no manual
- Buyers checking whether a used machine has mismatched or wrong-size tyres
- Anyone reading a sidewall for the first time
What is on it
- Field-by-field decoding of both metric and inch markings
- The speed rating letter table
- The load index table
- What the date code means and how to read it
- A record block for front and rear
How to use it
- 01Read the whole marking off the sidewall, not just the first three numbers.
- 02Record front and rear separately — they are frequently different sizes and different constructions.
- 03Check the date code. A tyre with plenty of tread can still be too old to be safe.
Use it with the registry
Other sheets you may want
- Used Chinese scooter inspection checklistWhat to check before handing over money, in the order you can check it, including the paperwork problems specific to these machines.
- Wheel bolt pattern measuring templateMeasure a bolt circle without a special tool, including the odd-numbered patterns where measuring across two holes does not work.
Free to print, copy, and share — including in forums, clubs and workshops. If you find a mistake on one of these sheets, tell us and it gets corrected. Every sheet carries a version so you can tell which one you have. All printables.