Tires

Tire Blowouts in Florida Heat: What Deltona Drivers Should Watch For

Tire blowout damage on a car tire in Deltona, Florida

Tire-related crashes killed 511 people on American roads in 2024, a figure the National Highway Traffic Safety Administration publishes alongside its tire-safety guidance. A tire blowout in Florida heat is almost never one bad moment out of nowhere. It is low pressure, thin tread and a few months of sun arriving together, usually at the speed that makes them matter most.

Summer is the season that collects all three in Volusia County, and the I-4 stretch along Deltona's western edge is where the bill tends to come due. What follows is what heat actually does inside a tire, the checks that catch a failing one in a driveway instead of a travel lane, how to hold the car if a tire lets go at speed, and when a blowout calls for a roadside flat tire change rather than a hopeful drive to the nearest shop.

Why do tire blowouts happen more often in Florida's summer heat?

Heat is what turns a marginal tire into a failed one. NHTSA puts it directly: sustained high temperature, such as driving long distances in hot weather, can cause a tire to deteriorate, leading to blowouts and tread separation. The tire that carried you through spring without complaint is the same tire running hotter, longer, and with less margin every afternoon from June onward.

The mechanism is friction. An underinflated tire flexes further with every rotation, and that flexing generates heat inside the sidewall on top of the heat already coming off the pavement and the engine bay. Load does the same thing from another direction — Florida's Highway Safety and Motor Vehicles department warns that overloading a vehicle creates excessive heat inside the tires, which can result in tire failure. A loaded trailer hitch on the way to the coast, four adults and a weekend of gear, a work truck carrying more than it usually does: each one moves a tire closer to the edge on a day when it has no margin left.

Age is the quiet third factor. NHTSA notes that tire aging is a greater concern in the more southern parts of the Sun Belt states, which is precisely where Deltona sits. Rubber degrades with heat and ultraviolet exposure whether the car is driven or parked, so a tire with plenty of tread left can still be too old to trust — a common situation on second cars, rarely-used trucks, and the spare nobody has looked at in four years.

How does summer heat change the pressure in your tires?

Warm air raises what the gauge reads, which is how a hot tire can look correctly inflated while the same tire is several pounds low at dawn. The U.S. Tire Manufacturers Association puts the relationship at one to two pounds for every 10 degrees of temperature change — pressure climbing in warm weather and falling in cool weather.

That is why every serious source says the same thing about timing. NHTSA advises checking the pressure of all tires, including the spare, at least once a month while the tires are cold, and Florida's Highway Safety and Motor Vehicles department states flatly that air pressure should always be checked when the tires are cold. Cold means the car has been sitting, not merely that the morning feels cool.

In practice that rules out most of the readings people actually take. A gauge check in a gas station bay after a run down I-4 to Lake Mary, or after twenty minutes of stop-and-go on Howland Boulevard, reports a tire that has already heated up and expanded. The number that tells you something is the one taken in the driveway before the first trip of the day, set against the figure on the placard inside the driver's door — not the maximum pressure moulded into the sidewall, which is a ceiling rather than a target.

A five-minute check before a hot-weather drive

Pressure — monthly, cold

Set all four tires to the placard figure in the driver's door jamb before the car has been driven, and put the gauge on the spare while you are there.

Tread — monthly

Florida's penny test: insert a penny head-down in a groove. If the top of Lincoln's head shows, the tread is under 2/32 of an inch and the tire needs replacing.

Damage — weekly glance

FLHSMV recommends inspecting tires weekly. Bulges, cuts, cracked sidewalls and wear that is heavier on one edge are the warnings that come before a summer failure.

Which tires are most likely to fail before you notice?

The tire most likely to blow is the one nobody has put a gauge on. NHTSA reports that only 19 percent of drivers keep their tires properly inflated, which makes underinflation the ordinary state of the cars in any Deltona parking lot rather than an unusual fault.

Four profiles carry most of the summer risk: tires worn near the 2/32-inch replacement point, tires several years old on a car that lives outdoors in full sun, tires on a vehicle that is carrying or towing more than it usually does, and the spare that has been under the cargo floor since the car was new. The last one only reveals itself at the worst moment, when it comes out flat to replace a tire that has just failed.

Tire pressure monitoring covers less of this than drivers assume. Passenger cars, light trucks and vans from model year 2008 onward are required to have the system, so most vehicles on the road here have it — but it reports significant underinflation, not thin tread, not age, and not a sidewall that has been scuffed along a curb on Saxon Boulevard. A dashboard with no lights on it is not a tire inspection.

Tire let go on the shoulder? Don't nurse it home.

A blown tire on I-4 or a Deltona boulevard is a roadside job, and every mile driven on the rim adds to the repair bill. Give us the nearest exit or cross street and a truck comes to you with the gear for a change or a lift. Contact Towing Deltona or call dispatch directly.

Call (386) 742-6986

What should you do the second a tire blows out at speed?

Hold the wheel with both hands and ease off the accelerator gradually — do not brake hard. NHTSA's blowout guidance is built around that sequence because a blowout is a sudden loss of air pressure that can pull the car off line, and braking hard while the car is already unbalanced is what turns a failed tire into a crash.

The car will feel wrong and loud, and it will want to drag toward the failed corner. Steer straight, let speed bleed off on its own, and only then start looking for somewhere to stop. Hazard lights go on while you are still slowing, not after you have parked.

Where you end up matters as much as how you stop. On I-4 through Deltona there is a real shoulder, but traffic is moving at seventy and the safest place is as far right of the white line as the car will go, wheels pointed away from the lanes, with everyone either out on the passenger side or belted inside. On the boulevards it is worth coasting an extra hundred yards to reach a plaza entrance or a turn lane rather than stopping in a through lane. If a ramp at Saxon Boulevard or SR 472 is close, the ramp shoulder is calmer than the interstate.

Can you drive on a blown tire to a shop in Deltona?

No — once the tire has come apart, the wheel is carrying the car. Even a slow mile on a destroyed tire chews the rim, and the shredding tread can take out a wheel-well liner, a brake line or a sensor on the way past. The cost of that short drive routinely exceeds the cost of the tire it was meant to save.

A usable spare changes the picture, with conditions attached. Temporary spares carry their own speed and distance limits printed on the sidewall, and they are meant to reach a tire shop, not to finish the week. Changing one at the roadside also needs level ground, room away from traffic, and a jack point you can reach — which rules out most of the I-4 shoulder and any soft verge after an afternoon storm.

When the spare is flat, missing or already in use, when the ground will not take a jack, or when the blowout damaged more than the tire, the practical options are a roadside flat tire change or a tow to a shop you choose. Both start with the same call, and both beat a drive that ends worse than it began.

Quick answers about summer tire blowouts

Should I let air out of my tires when they get hot?

No. Inflation pressure rises one to two pounds for every 10 degrees of temperature change, so a tire read hot after a drive is supposed to read higher than the placard figure. Bleeding that air out leaves the tire underinflated once it cools, which is the condition that builds heat in the first place. Set pressure cold, before the car has been driven.

How often should I check the spare?

Monthly, at the same time as the four tires on the ground. NHTSA advises checking the pressure of all tires, including the spare, at least once a month when the tires are cold, and Florida's highway safety department gives the same monthly advice for the spare specifically.

Does a TPMS light mean my tires are fine until it comes on?

No. The system warns about significant underinflation, not worn tread, age or sidewall damage, and those matter more in Florida heat. Passenger cars, light trucks and vans from model year 2008 onward are required to have TPMS, but it is a backstop behind a monthly gauge check, not a replacement for one.

Roadside Tire Help

Stranded on a hot shoulder with a shredded tire?

Tell us where you are and what the tire did. Towing Deltona runs roadside tire changes and towing across Deltona and Volusia County, so the car moves on a truck instead of on a rim.