Traditionally, car tires have been filled with compressed air. Air is 78 percent nitrogen and just under 21 percent oxygen, ...

Have you ever noticed cars with mysterious green valve stem caps on their tires? If you have, you may wonder why some people choose to use them. Don't worry — a lot of people have the same ...

The AstroAI L7 is a cordless tire inflator and portable air compressor with a 4,000mAh battery that hould be able to fill up ...

Another that you should consider is a tire inflator and portable air compressor, like the Aldf Portable Tire Inflator at Walmart. Right now, this bestseller is 87% off, bringing it down in price ...

If you buy something via one of our links, we may earn a commission. Meet the ALDF Portable Tire Inflator, maybe the best thing to keep stashed in your trunk that you hope you never have to use.

But do tires retain their inflation better with nitrogen than with regular air? Consumer Reports conducted a 12-month study ...