Know Your 704

Low tire pressure light on? Where to get it checked and free air around Charlotte

Many cars were in line at Discount Tire on North Tryon Street in Charlotte on Sept. 28, 2022 for the store’s popular free air check on tires, which includes an employee inflating tires to the proper level.
Many cars were in line at Discount Tire on North Tryon Street in Charlotte on Sept. 28, 2022 for the store’s popular free air check on tires, which includes an employee inflating tires to the proper level. The Charlotte Observer

Few things can trigger a headache faster than rushing out the door in the morning and hopping in the car only to have your low tire pressure light come on.

But it’s an occurrence that starts to happen more frequently as the weather begins to cool.

There’s a scientific reason why changes in temperature affect the air in your tires, experts say, and it’s an important issue to take care of quickly. In Charlotte, there are multiple places that will check your tire pressure and help you add air, often free of charge.

Here’s what to know about why weather affects air pressure and where you can get your tires taken care of for free in Charlotte:

Why does cold weather affect tire pressure?

When the weather starts to cool, your tire pressure can start to drop because the “molecules in the air move slower and huddle together,” Firestone Complete Auto Care explains.

It’s estimated that your tires can lose 1 to 2 pounds per square inch of pressure “for every 10-degree change in temperature.”

Your tire pressure “should bounce back after the cold spell passes,” Firestone adds, but “low tire pressure shouldn’t be ignored” because it can impact your car’s fuel efficiency and stopping time and decrease the lifespan of your tires.

Free tire pressure checks and air in Charlotte

If your low tire pressure light does come on, there are multiple businesses around Charlotte that will check your tire pressure and add air to your tires if needed. Some will even do so for free:

This story was originally published September 28, 2022 at 2:41 PM.

Related Stories from Charlotte Observer
Mary Ramsey
The Charlotte Observer
Mary Ramsey is the local government accountability reporter for The Charlotte Observer. A native of the Carolinas, she studied journalism at the University of South Carolina and has also worked in Phoenix, Arizona and Louisville, Kentucky. Support my work with a digital subscription
Get unlimited digital access
#ReadLocal

Try 1 month for $1

CLAIM OFFER