
If exposed to the sun for a long time, the tires, like the paint, will age faster, and more serious consequences may lead to the danger of a flat tire. Here are the relevant introductions: 1. Car paint: No matter how high the temperature is, the car paint will not be damaged due to the high-temperature environment. Generally, the car paint will melt only when the temperature reaches 140-160℃, so even if the outdoor temperature is extremely high in summer, it cannot cause the slightest damage to the car paint. 2. Tires: If exposed to the sun for a long time, the tires, like the paint, will age faster, and more serious consequences may lead to the danger of a flat tire. It is important to know that heated rubber will age faster when it encounters cold, which will cause the tires to crack. Therefore, the car should be parked in a cool place to cool down naturally. If the tires are found to be damaged, they must be sent to a repair shop immediately for treatment, otherwise, the consequences will be unimaginable.









I've been driving for over a decade and witnessed firsthand how summer heat wreaks havoc on my beloved car every year. The most visible damage is paint fading – a dark-colored car parked in an open lot for just two months shows noticeable color difference. The dashboard suffers worse; a colleague's faux leather center console developed cracks from sun exposure. The most dangerous hazard is lighters left inside – last year, a car in our neighborhood self-ignited because of this. Now I always use a windshield sunshade, crack windows slightly when parked for ventilation, and regularly spray protective agents on rubber seals. High temperatures also cause abnormal tire pressure spikes – once before a highway trip, my tire pressure measured 0.7bar higher than cold pressure, fortunately I released air in time.

When I first bought the car, I didn't know better. After leaving it under the scorching sun, I directly turned on the AC to cool it down, and the windshield cracked with a 'bang'. The mechanic said it was due to the extreme temperature difference between the inside and outside of the glass. Now, I always park in the shade at noon, and if there's no shade, I cover the hood with a car cover. Once, I forgot to retract the sunshade, and in the afternoon, I found dead pixels on the navigation screen. A colleague had it worse—a perfume bottle left on the dashboard exploded from the heat and corroded the leather seats. It's advisable to keep a cooling spray in the armrest box and spray it before getting in. Also, avoid washing the car immediately after it's been baking in the sun, as the cooling system might crack.

With twenty years in auto repair, I've seen cars damaged by summer sun lining up in long queues. The most extreme case was brittle and short-circuited engine bay wiring insulation—when opened, it looked like potato chips. Several cases of coolant boiling and spewing, causing the radiator to overheat, occur every week. A reminder to all: the ECU computer board under the windshield can crash from prolonged exposure; wiper blades harden if not replaced every two months; older cars should pay special attention to fuel tank pumps, as high temperatures can cause gasoline vapor pressure to spike. Last week, I fixed a car with a transmission overheating alert—all because prolonged sun exposure degraded the fluid.

Living in Hainan, I've experienced firsthand how three days of intense sun exposure can warp the sunroof seals, causing leaks. During last year's typhoon season, I noticed bubbles forming in the black sealant around the windshield edges. The suction cup on my dashboard mount frequently melts and detaches from the heat. I've now developed habits like propping up the wiper blades when parking outdoors to prevent sticking, reducing tire pressure by 0.2 bar below standard, and checking coolant levels weekly. Running the AC after extreme heat significantly increases fuel consumption - once, a full tank lasted 60 km less than usual. Even bottled water stored in the trunk can deform and leak under these conditions.

Studied the thermal aging issue of rubber components, where sealing strips can harden and crack within two years under high temperatures. The front plastic parts of a car are most vulnerable to intense sunlight—a friend's car had its headlight covers turn yellow and crack within six months. Experimental data shows that the dashboard temperature under direct sunlight can reach 80°C, enough to melt chocolate. I installed reflective film on the sunroof, which reduced the temperature by 12°C in tests. Special attention is needed for cars with start-stop systems, as life can decrease by 40% in high-temperature environments. Nowadays, I don’t fill up the fuel tank completely, leaving some space to prevent fuel vapor expansion. Aftermarket parts attached with 3M adhesive tend to come off easily in summer.


