Free tire air is just one of those things they offer. They also have QuikTrip Kitchen that serves pizza and high-quality food.
They provide you with free air fill-ups for your under-inflated tires when you visit their stations.
The convenience store chain owned by Giant Eagle has provided customers with free tire inflation with monitoring systems that ensure recommended tire pressure.
They have access to the most advanced tire pressure monitor to keep track of the air pressure in your tires. You won’t end up accidentally damaging them by overinflation.
Costco promises to fill up your tire with pure nitrogen that guarantees a more extended inflation period. You can use this free service even without a membership.