Check your tires in hot weather – or else!

Photo FIle
Richard Perry.

■ By Richard Perry / Contributed

Greetings from the Hemet Car Guy,

It’s freaky hot out there!

We have had – and will continue to have – hot, hot days! if you are planning a road trip, it’s important to know how the hot weather can affect your tires.
One of our customers, who had bought a nice F250 truck to tow his trailer, said that his tires were overinflated, a fact he had just noticed after returning from a lengthy hospital stay.
When I called Corey Wilson of Ramona Tire, who handles our safety checks, he said that the extreme heat may be the culprit. Changes in outdoor temperature will affect your vehicle’s tire pressure too.
A drop in temperature certainly will lower tire pressure while conversely, a rise in temperature will create more pressure. “Just remember that for every 10-degree rise in Fahrenheit temperature, your tire’s pressure will go up roughly one pound per square inch (PSI),” notes Corey. “As you can imagine, this can really pose a threat to your tires when the temps skyrocket in the summer.”
As if that’s not cause enough for concern, consider this: Regardless of outdoor temperature, tire pressure increases while you drive. In fact, within the first half-hour of driving, tire pressure can increase roughly 5 PSI. Combine this fact with the sweltering heat of summer, and you could run the risk of driving on over-inflated tires. So let the air out!
The effect of over-inflated tires can be significant. When tires have too much pressure, they’re more susceptible to blowouts and overheating. Think about the retreads that you see on the side of the freeway. Overheating can also cause premature tire wear. Over-inflated tires also lend to decreased traction and subpar handling, so they can affect your safety.
First, become familiar with your vehicle’s recommended tire pressure. You can find this information in the door jamb and in the owner’s manual.
Next, check your tire pressure regularly. Do it at least once a month—first thing in the morning, or after a few hours have passed since you last took your vehicle for a spin, i.e. when the tires are cool. To help maintain fuel economy and tread life, it’s best to check all four tires–especially if you’re taking a road trip.
We don’t recommend letting the air out of your tires yourself; you run the risk of under-inflating them, which can be just as dangerous as over-inflation.

Good Driving!
The Hemet car Guy

Richard Perry is the Hemet Car Guy and owner of VIP Autos in Hemet. For more information, visit

Leave a Reply

Your email address will not be published. Required fields are marked *