The Street and Yahoo may earn commission from links in this article.Why we love this dealWhether you're driving a car or riding a bike, there are few things as scary as a tire that's running low on air. But what do you do if your tire's air is in the red and you're nowhere near a tire pump?The $40 AstroAI L7 Portable Tire Inflator is on sale at Amazon for only $20, and it's an impressive emergency device that lets you inflate your tires on the fly. Shoppers sing its praises, calling it "a lifesaver for slow leaks."AstroAI L7 Portable Tire Inflator, $20 (was $40) at AmazonCourtesy of AmazonShop at AmazonDetails to knowThis portable tire inflator is small enough to fit in your cupholder and in most pockets, but it packs the power of a quarter-munching air compressor. It offers a whopping 150 PSI of maximum pressure, providing reliable airflow of 17 liters per minute. Its capacity to pump things up is no joke. Once it's fully charged, it can refill a car tire up to eight times, a motorcycle tire up to 18 times, a bicycle up to 30 times, and a standard basketball up to 88 times.AdvertisementAdvertisementThe AstroAI L7 Portable Tire Inflator powers up like any great, reliable piece of tech: via a USB-C cord. The device has both a USB-C input and output, so it doubles as a portable charger as well. The device's LCD screen even displays the battery life, along with real-time PSI readings. Related: Walmart is selling a $1,100 e-bike for $300 that has a top speed of 25 MPHWhy do shoppers love it?"This portable air tire pump is a total game changer," one shopper said. "It's compact, easy to use, and surprisingly powerful. I've used it multiple times for my car tires and even bike tires, and it inflates quickly and accurately every time. It's a must-have for every car and a permanent fixture in my trunk — highly recommend for emergencies or regular top-ups."The AstroAI L7 Portable Tire Inflator retails for $40, but you can shop it at Amazon for only $20 for a limited time. Keeping one in your glove compartment will help you tackle tire-related emergencies when you're on the open road. AdvertisementAdvertisementThis story was originally published by TheStreet on Jun 24, 2026, where it first appeared in the Deals section. Add TheStreet as a Preferred Source by clicking here.
