Identification of the cause of the tyre explosion

A tire blowout is when a car tire ruptures, suddenly loses air in a very short period of time, and is deflated. So what are the causes of tire explosions?
The main causes of tire explosion are: the inner layer of the tire is damaged, causing side bulges, and failure to repair them in time will lead to the risk of a tire blowout; when the tire pressure is low or high, the sidewall of the vehicle will be continuously squeezed during driving or the friction of the tire will increase, which will put a lot of pressure on the tire and eventually lead to a tire blowout; tire aging will also increase the probability of a tire blowout.
Zhongke Testing provides accident identification services, which can identify the causes of tire explosions, issue professional and reliable inspection reports, and assist courts and enterprises in resolving product quality disputes.

GB 7258-2017 Technical specifications for motor vehicle operation safety
JT/T 198-2016 Technical classification and assessment requirements for road transport vehicles
GB/T 10824-2022 Technical specifications for pneumatic tire rims and solid tires
GB/T 40717-2021 Flame-retardant tires
GB 9745-2009 Aviation tire
GB/T 10823-2009 Pneumatic tire rim solid tire specifications, dimensions and load
GB 9743-2015 Car tire
HG/T 2177-2011 Tire appearance quality
HG/T 5264-2017 Go-kart tires
GB/T 7036.1-2009 Pneumatic tire inner tubes Part 1: Car tire inner tubes
GB/T 32381-2015 All-terrain vehicle tires

On a certain day in 2018, a large truck inflated its tires after repairing them at the auto repair department. As a result, the tire exploded, killing a maintenance worker on the spot. Our company was entrusted by an intermediate court to identify the cause of the accident. The expert team sampled and tested the tires of the large truck involved in the case, and concluded:
1, the steel cords distributed radially along the tire burst site were rusty, proving that the steel wires had broken long before the accident;
2, after the tire steel cords broke, only the sidewall rubber The tensile force can no longer withstand the normal working air pressure;
3, the tire was retreaded from an old tire, and its bursting location coincided with the repaired location of the retreaded old tire;
4. After the inner tube of this tire was repaired, the bursting occurred when the tire was inflated and had nothing to do with the inner tube repair and inflation operations;