Highly rated tire inflators as of 2015 include the Viair 00073 70P Portable Compressor, the Campbell Hausfeld MP6000 and the Slime 40022 12-Volt Tire Inflator, according to Air Compressor Spy. Also highly rated is the Black & Decker Air Station Inflator ASI300.
The Viair 00073 70P Portable Compressor is a durable inflator that only requires a 15-amp power port. It imparts 100 PSI of pressure but weighs less than four pounds. It works quickly, inflating 20 tires in less than 40 minutes, and comes equipped with all needed accessories in a carrying case.
The Campbell Hausfeld MP6000 is the best inflator for external air compressors, according to Air Compressor Spy. It has a hands-free design and clips securely onto the tire and the air compressor. It can provide a PSI check to reveal how low the tire pressure is and has a relief valve that acts as a safety measure to avoid overfilling the tire.
The Slime 40022 12-Volt Tire Inflator is a good budget inflator. It can fill a tire in 120 seconds and includes a PSI readout in digital form. It is powered by a lead wire that plugs into the vehicle's cigarette lighter and boasts a LED panel to help with nighttime work.
The Black & Decker Air Station Inflator ASI300 can inflate everything from air mattresses to vehicle tires. It has an automatic shut off to prevent over inflation.