1 option: As you know, the electric pumps pull too much power to be used in the accessory plug. Needs an optional fuse panel. Advantage is small size, but moves only a small amount of air. Could weaken/kill battery in winter. Just for your information, BMW makes a Mini foot pump. Nippy Normans sells one, too. Three-four minutes to pump up a tire,about the same. It's Larger.
Part No: WUN-8600250 34.00 Pounds
Bikers Dream mini footpump with digital gauge (WUN-8600250) - Nippy Normans
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Set, mini-flow pump171607715824$100.62+core
RealOEM.com * BMW K27 R 1200 R 11 (0400,0490) Set, mini-flow pump
BMW used to include a tire repair kit with plug tool and gas cartridges on every bike. Still available as an optional order. Decide what works best for you!