If you've ever noticed your tire pressure dropping at the absolute worst possible time—before work, while on a road trip or in the middle of a time-sensitive errand—you know how seriously inconvenient it can be to track down an air pump.A low tire doesn’t have to derail your day—this Etenwolf portable inflator may help you handle it faster.That's why more drivers are keeping portable tire inflators in their cars. Compact devices like the Etenwolf S1 are designed to make it easier to check and refill your tires wherever you are, without relying on a less-than-reliable gas station.The Etenwolf S1 is the emergency car essential that lets you fill your tires at home or on the road, making it easier to stay ahead of unexpected drops in pressure.AdvertisementAdvertisementPlus, it is small enough to stow away in your glove box so you really have no excuse to be prepared. Here's what to know about how it works, whether it may be worth adding to your car and how to save 40% today.EtenwolfEtenwolf S1 Portable Tire Inflator Mini Air CompressorA glove box‑friendly inflator built for real-life tire pressure moments—like low pressure warnings, road trips and "the gas station pump is broken again." The S1 is cordless, USB‑C rechargeable and includes an auto‑stop preset so you can inflate to your target PSI without guessing.$60 at EtenwolfHow the Etenwolf S1 is designed to workA portable tire inflator like the Etenwolf S1 is designed to help drivers quickly fill low tires at home or on the road.Compact but powerful: Despite its small size, it delivers up to 160 PSI, far more than typical passenger vehicles require.Cordless, USB‑C rechargeable design: No proprietary chargers or car outlets required. You can recharge it with the same cable you use for most modern devices.Fast, precise inflation: It can raise a standard car tire from 30 to 35 PSI in about a minute, with auto‑stop functionality so you don't over-inflate.AdvertisementAdvertisementMore: Don't get stuck with a flat—this tire inflator is 40% off right nowLong‑term readiness: A standout feature is its 12‑month standby time, meaning you can charge it once and leave it in your car for up to a year without worrying about a dead battery.Save 40% at EtenwolfHow fast can the Etenwolf S1 inflate a car tire?It can raise a standard car tire from 30 to 35 PSI in about one minute, depending on tire size and conditions.A multi‑tool for drivers, cyclists and familiesUnlike single‑purpose inflators, the Etenwolf S1 is designed to handle more than just car tires. With the included adapters, it works for:Cars and motorcyclesRoad and mountain bikes (Presta included)Sports balls and inflatablesAdvertisementAdvertisementIt also includes a built‑in LED emergency light with Flash, Strobe and SOS modes—a helpful addition if you're dealing with tire issues at night or in low‑visibility conditions.How long does the battery last when not in use?Etenwolf says the S1 can hold a charge for up to 12 months on standby, making it suitable for long‑term car storage.Save 40% at EtenwolfMore: Route 66 road trips are trending again—here's how to do it for lessUSA TODAY Shopping will be covering all the best deals and drops, so be sure to sign up for text alerts, check us out on Flipboard, follow us on TikTok, sign up for our newsletter and follow us on Instagram to stay updated!AdvertisementAdvertisementThis article originally appeared on USA TODAY: How this tire inflator deal could save you from a roadside emergency
