What are the disadvantages of widening car tires? Is this modification illegal?

In fact, in addition to the three main parts of the car, the tire is also a very important part. Nowadays, many car companies include the width of tires in order to save costs. It can be said that there is no need for benefits. So in the process of buying a car, we often see that some car owners are very satisfied with the original car. They gave up as soon as they saw the tire. That's why. In these articles, we found the national standards GB/T 26278-20 17 and GB-3658 1-20 18, among which the first article is "Tire Size Replacement Guide". Mainly to tell you that the original tire can replace other tires or rims.

This is understood by many media as? Rim relaxed its revision policy? . Is that really the case? The biggest feature of widening tires is that the increase of contact area makes the tires have stronger grip, and the safety factor of tires with strong grip will definitely increase, because the overall contact area between vehicles and the ground will definitely increase, and the driving stability will definitely be better; Wide tires will be more beautiful and plump in appearance. Some people think that this is not an advantage, but such a driving force; The vehicle with wider tires will speed up and the braking effect will definitely be better, because the stiffness of wider tire wall will increase and the tire deformation will decrease during acceleration and braking; When the tire is widened, the relatively narrow tire performs better when turning and is not easy to slip.

Everyone must know the tire size. Numeral 245 represents the tire width (mm). /? After that? 55 and 50? Represents the flattening rate (%). The smaller the number, the thinner the sidewall. R is the rim size (inches) that we are most concerned about. It can be seen from the replacement table that 17, 18 and 19 inch rims and tires can be replaced with tires of this specification. Seeing this, are you ready to act? Sao nian? Have the children started YY? Take it easy! Careful friends will find that in these tables, the rim size and flatness have changed, but the tire width has not changed.

With the increase of contact area, fuel consumption will also increase, because friction resistance will increase with the increase of contact surface; After the tire is widened, the friction area increases, and the noise generated by the tire will also increase; If the widened tires don't match the power of the original car, the result is that the speed is slow or even unable to run; (This is the same reason that fat people run slowly. Although wide tires are not easy to slide sideways, they are easy to tip over. When driving at high speed, the tires will completely bite the ground. When turning, the tire is like a fulcrum in the lever law. The centrifugal force of the car's roll will lift the inner wheel off the ground, leading to rollover.