Tyre width does affect the rolling resistance.
As part of the fault finding process I would try original OEM tyre/alloy sizes and compare to a known good working car with the same setup.
Additionally, just like D2 has different springs for cars with different wheels/equipment/body, different suspension codings must exist for air suspension of a D4?
What were the troubleshooting steps of the garages which attempted diagnosis?
Last edited by Ronin; 19th July 2023 at 07:03 PM.
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