Payload
Payload is the mass available for occupants and cargo within the vehicle’s authorized mass limit, according to the definition and figures in its documentation.
Reviewed 05.10.2026wheel.news
Automotive glossary
Understand the concepts used in our guides and calculators. Documented definitions, examples, and related reading.
4 concepts
Plug-in Hybrid Electric Vehicle (PHEV)
A vehicle that combines electric and combustion propulsion and allows its battery to be recharged from an external source.
Reviewed 05.10.2026Pressure altitude
Pressure altitude is the altitude corresponding to an atmospheric pressure referenced to the standard atmosphere. It is a pressure reference, not a direct measurement of distance above the ground.
Reviewed 05.10.2026Preventive maintenance
Preventive maintenance comprises scheduled inspections and actions intended to keep a vehicle functioning and reduce the likelihood of failures.
Reviewed 05.10.2026