OWNER ANSWER
Changing tyre-pressure units on BYD DOLPHIN SURF
On the owner-tested DOLPHIN SURF software, no user control was found for switching tyre-pressure readings to PSI. Check your normal display/units settings for an offered option; if none appears, use the displayed unit with the correct vehicle pressure label.
- Park and read the unit beside the tyre-pressure value before opening the normal vehicle settings; note whether it says kPa, bar or PSI.
- Look under display, units or tyre information for a pressure-unit choice. Safety note: A damaged, rapidly deflating or visibly low tyre needs tyre assistance rather than a units adjustment. Use a reliable gauge and the correct cold-pressure target before relying on the dashboard.
- If offered, change only that choice and check the unit on the tyre screen.
- If the option is absent, keep the displayed unit and compare like with like: divide kPa by 6.894757 to get PSI, or multiply bar by 14.5038. For example, 250 kPa is 2.5 bar, about 36.3 PSI. This is a conversion example, not the recommended pressure for your SURF; use its own cold-pressure label.
What to expect
If your build offers the setting, the tyre display shows the chosen unit. Otherwise, a converted gauge reading can be compared with the specified cold-pressure target without changing the vehicle settings.
If that did not work
For a missing option, give BYD the exact trim and complete software version and ask which units that build supports. For a missing or implausible reading, check actual cold pressure and tyre condition, then use the tyre/TPMS route rather than continuing to change display settings.
If the converted figures still differ, compare the gauge and dashboard at the same tyre, allowing the car to refresh its reading. A warm tyre or stale dashboard value is a separate issue from the unit setting. Use the cold gauge measurement against the vehicle label rather than inflating to the example above.
What changing units does
Bar, kPa and psi are ways to display the same pressure. Changing the setting does not inflate a tyre or alter its required cold pressure. Use your own vehicle label or official manual rather than a tyre sidewall maximum or another model’s target, and avoid heavy rounding.
Could a later update add the option?
Menus can differ by software, region and model year. Check the official release notes and your installed build; there is no confirmed future feature date here. The tested SURF observation remains relevant to that setup.
Related links
Source: BYD UK official source. Checked 22 October 2026.
Sources for these additional checks, reviewed 13 November 2026: Official handbook guidance (BYD UK) · Official support guidance.