Garbage BMW 760Li "Within the rubber layer of the tire, there is a layer of ply composed of polyester cord and other materials. It is the stress-bearing skeleton layer of the tire to ensure that the tire has the necessary strength and Dimensional stability. Once the ply is damaged, the air pressure in the tire will be out of control, resulting in uneven stress on the tire, and the bulge will appear. ”
, how is the ply damaged? An Mingxian said that research by him and his colleagues proved that Malugazi is the "killer" among them. "Many car owners often do this: accelerating onto the sidewalk, or when parking, the car stops on the bumps on the road. As everyone knows, doing so can cause great damage to the tires."
When a car drives onto a curb, its tires will deform. The higher the vehicle speed and the smaller the angle with the curb, the more serious the deformation will be. We once tested that if a car drives diagonally onto a 15 cm high curb at a speed of 40 kilometers per hour at an uphill angle of 40 to 70 degrees, almost 100% of the tire ply will be damaged. In addition, if the car passes through some uneven roads at high speed, such as potholes or manhole covers, the tires will also suffer instantaneous strong impact, causing the cord layer to break. Also, if the car is parked on an uneven road for a long time, the tire ply will be in a twisted state for a long time, which is also detrimental to the tire's impact resistance. And these are all caused by external forces on the tire, not the tire itself. No matter how strong the tire is, it cannot withstand such torment.
In this case, can’t you drive on and off the curb? Not necessarily. If you must do this, there are tips to protect your tires. If you keep the car body at 90 degrees to the road and try to drive the car straight up slowly, tire damage will be greatly reduced. In addition, what car owners can do is try to avoid choosing tires with a smaller aspect ratio. "Aspect ratio" is a tire term that means the ratio of the tread section width to the tire section height. In layman's terms, under the same tire width, the lower the height of the tire side (that is, the distance between the tread and the wheel hub), the easier it is to bulge.
Recommendation: During daily driving and parking, the tires should be kept on a flat road surface as much as possible. If you have to drive in bad road conditions, be careful - slow down. Because the slower the vehicle speed, the adverse effects caused by the tires impacting undesirable obstacles on the road will be lighter. Finally, An Mingxian said that Chinese car owners attach great importance to engine maintenance, but often ignore tire maintenance. “Regularly checking tire pressure, four-wheel alignment, tire cross-rotation, and developing good driving habits can greatly extend tire life.
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