BMW 8 series Convertible, G14 / F91 (USA)

Additional Notes

• The BMW M8 xDrive Convertible carries a high temperature cooling circuit capacity of 11.5 liters, which is notably larger than the high temperature circuit figures seen in the M850i xDrive Convertible, reflecting the greater thermal demands of the M8's engine.
• A dual-circuit cooling architecture is present across all three configurations, separating the high temperature circuit from a distinct low temperature cooling circuit, each with its own specified fill capacity.
• The M8 xDrive Convertible's low temperature cooling circuit holds 4.5 liters, compared to 3.25 liters in the M850i xDrive Convertible, a difference that corresponds to the more extensive cooling infrastructure required by the M8 powertrain.
• The M850i xDrive Convertible (2018-2019) specifies a high temperature circuit capacity range of 8.75 to 10 liters rather than a fixed value, indicating that the actual fill volume can vary depending on the specific configuration or state of the system during service.
• The M850i xDrive Convertible row covering 2018-2019 carries a production date qualifier of 01-08-2018, meaning the stated cooling system capacities apply specifically to vehicles produced from that date onward within that model year span.
• All three rows are designated for normal use conditions, meaning the capacity figures listed are not adjusted for severe-duty or extended-service scenarios.
• The M850i xDrive Convertible's high temperature circuit capacity range of 8.75 to 10 liters remains consistent between the 2018-2019 row and the row starting from 2019, as does the 3.25-liter low temperature circuit figure, indicating no change in cooling system volume across those two specification entries.