If you appreciate the convenience of cordless tools, the new RTC4000 Rechargeable Tyre Inflator from Ring could be worth a closer look. Measuring 150mm, it can easily slip into your car’s glovebox or a storage cubby, and kept charged via its one-metre USB-C cable or three-metre DC cable if you’d prefer to charge it at home or the office. Its 60cm air hose can inflate a 15-inch car tyre from flat to 35psi in under six minutes, so it should work particularly well for quick top-ups. It has a backlit screen and LED light, along with an adaptor for sports equipment and Presta valves, while a handy memory function can store up to four pressure presets in PSI, BAR or kPA.