BYD SEAL tyre pressure rises after driving: how to check it

China-market owner report

In a discussion dated 2025-09-28, the linked China-market report raised this issue: A SEAL EV owner worried about pressure increasing as replacement tyres warmed up. This is an individual account, not a confirmed diagnosis or failure-rate finding. The steps below use the export handbook.

Checks to make while safely parked

1. 1Check the exact tyre fitmentRead the fitted tyre size and rating, then compare them with the vehicle specification. Have a professional confirm any replacement tyre that raises a rating or pressure concern.
2. 2Find the cold targetUse the label on your own driver’s door frame, including any stated load condition. A China-market owner’s label is not the specification for every export SEAL.
3. 3Measure when coldWait at least three hours after driving before using a suitable gauge. The handbook allows only a short pre-measurement journey of up to 1.6 km for a cold assessment.
4. 4Adjust and inspectCorrect the cold reading to the applicable label value and check all four tyres for damage or leakage. Keep a record if one tyre behaves differently.

Tick steps as you go. Your progress stays in this tab.

Check the result and know when to stop

The manual describes a normal warm increase of roughly 0.3–0.4 bar, but that is not a licence to dismiss damage or unsuitable tyres. If replacement sidewall information appears incompatible with the car’s requirements, have the fitment checked rather than choosing a lower pressure by guesswork.

Common questions