# Changing the Speed Unit from KM/H to MPH

> One parameter — P02 — and the two settings people change by mistake instead.
>
> **Applies to:** D-series

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<div align="center">

<iframe width="720" height="405"
        src="https://www.youtube.com/embed/aNRi90Jun4k?rel=0"
        title="Change Speed Unit from KM/H to MPH"
        frameborder="0"
        allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share"
        referrerpolicy="strict-origin-when-cross-origin"
        allowfullscreen></iframe>

<sub>*Change Speed Unit from KM/H to MPH* — if the player does not load, [open the video on YouTube](https://www.youtube.com/watch?v=aNRi90Jun4k).</sub>

</div>

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## The setting

**P02** controls the speed unit:

| Value | Unit |
| --- | --- |
| `0` | KM/H |
| `1` | MPH |

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## Steps

1. **Power on** the bike and open the parameter menu (the display's settings entry).
2. **Navigate to P02.**
3. **Change the value** — `0` for KM/H, `1` for MPH.
4. **Save and exit** the menu properly.
5. **Power cycle** — off, then on.
6. **Confirm** the speedo now reads in the unit you chose.

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## Watch out for

The two adjacent settings are **not** the speed unit, and changing them causes real problems:

- **P06 (wheel diameter)** — changes speedo *accuracy*. Set it wrong and the displayed speed is wrong in either unit.
- **P07 (speed signal magnets)** — changes the speedo *calibration*. Wrong value = wrong speed reading.

If your speedo is reading a plausible but **incorrect** number, the unit is probably fine and P06/P07 is the real problem. See the [P-Setting Guide](https://help.cemotoride.com/link/348).

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## Related

- [P-Setting Guide](https://help.cemotoride.com/link/348)
- [How to Limit Speed](https://help.cemotoride.com/link/347)
- [Display & Settings](https://help.cemotoride.com/link/330)
- [Tutorials Index](https://help.cemotoride.com/link/393)