Longer braking distances in rainy weather? Do car braking distances get longer on rainy days? Why?

It will definitely get longer, but don't step on the brakes in the rain, see the brake light in front of you, and hurry up, but don't step on it, step on it one foot at a time, if you step on it, the car will skid! The front-wheel drive car hates to step on the brakes, and the skidding of the rear wheels will be very serious, so you must grasp it! Oh o ( o ....

This is normal, and the general emergency treatment: the loose oil slows down and steps on the brakes, the oil should be fully loosened, and the brakes should be slowly pressed until the brakes are stopped.

Normally, the road surface and the tire surface are wet in rainy days, the frictional resistance is reduced, and the braking distance becomes longer.

In snowy days, the road is icy, and the braking distance is longer.

The same is true on rainy days.

Engine braking is used as much as possible.

The danger of braking hard in rainy weather is even greater.

Driving in the rain is a big test for newbies because the rain and mud make the wheels slip and then the water enters the exhaust pipe, causing the engine to stall. The most common is when braking, the braking distance becomes longer. So what should I do if I encounter these problems?

Why is it easy to lose control when driving on a rainy day? When driving on the road in rainy weather, the water on the tires and the road will form a water film, and it is difficult for the tires to remove the water in time. At this time, the water will give the tires a buoyancy force, and in severe cases, hydrosliding will occur.

The phenomenon of water skiing mostly occurs on rainy days, but to different degrees; If you pass through a belt soaked in water at high speed, there is a high chance that the tires will lose friction with the road surface, leaving the car in an uncontrollable and dangerous situation. This is more likely to happen if your car's tire grooves become shallow, or if the tire pressure is too low.

When driving on rainy days, the area of water on the mountainous road increases. If the tires don't drain well, the friction between the tires and the ground will be insufficient. When a car passes over a waterlogged road, it suddenly loses control of its direction.

Water accumulation can also cause resistance to the driving of the tires, causing the tires to slide to the side of the water accumulation, which is prone to traffic accidents. Why is the braking distance longer in the rain? When driving on dry roads, the speed increases and the coefficient of friction between the tires and the ground remains almost constant.

On wet roads, the coefficient of friction decreases dramatically as the speed increases, which means that the braking force decreases as the coefficient of friction increases, and the braking distance increases accordingly. If you are not an experienced driver, it is difficult to make an accurate judgment about the braking distance on a rainy day. At this time, it is necessary to ensure that there is enough distance between the vehicle and the vehicle in front, and the speed should not be too fast.

Driving by listening to traffic tips will also reduce the accident rate.

What do I need to pay attention to when driving on a rainy day? First of all, don't rush to lower the tire pressure. Some drivers who consider themselves experienced will lower the tire pressure before the rainy season to flatten the tire to increase the contact area with the ground and prevent skidding.

This method is not advisable, because the contact area of the tire increases, so the pressure on the ground per unit area decreases, the force during braking decreases, and the rainwater in the tire groove cannot be discharged in time, resulting in an increase in the distance during braking. When you see a waterlogged road, don't speed up to overtake, and don't dodge left or right. When driving on a rainy day, it is inevitable that you will encounter water areas on the road, but when you see the water, you will not flash, or immediately step on the brakes to slow down, which is a common problem for most drivers.

In fact, both methods are dangerous. Flashing left and avoiding right will undoubtedly make the driver behind not know how to avoid, increasing the occurrence of rear-end accidents; It is also dangerous to brake suddenly in front of or in a waterlogged area, such as the tragic accident mentioned above. In addition, sudden braking is prone to rear-end collisions.

If you don't encounter a deep water accumulation area, you can drive at the speed specified by the road without worrying about losing control. When the car passes through a waterlogged area, the braking system may be temporarily weakened and the distance when braking will be extended because the water on the tires does not drain as quickly. Therefore, it is best to keep a long safe distance when driving in rainy weather.

At the same time, pay attention to the speed and direction of the vehicle in front of you, and do not accelerate to overtake because the vehicle in front of you is slowing down, because the vehicle in front thinks it is dangerous or needs to slow down before you can brake.

It is true that this is true, because after the rain, the road becomes very wet and slippery, and the tire's grip and slip ability will be reduced a lot, and this will happen.

Yes, because the road surface is smoother on rainy days, the braking time is longer, and the braking distance will be longer.

Yes. Because of the friction on the road, it is not easy to stop, and the ability of the tires to grip the ground becomes very small, so it is necessary to travel slowly when driving in rainy days.

The braking distance of the car becomes longer on rainy days. Because the road is slippery in rainy days, it is easy to affect the grip of the tires.

The possible reason is that the contact surface between the brake pad and the brake disc or brake drum will be insufficient, resulting in a decrease in braking efficiency; Road conditions and vehicle weight have their reasons.

The contact surface between the brake pad and the brake disc or brake drum will be insufficient, resulting in a decrease in braking efficiency, and the solutions are:

1. Braking in advance. This requires knowing the road condition information in advance and braking in advance to prevent accidents caused by too soft brakes.

2. Measure the hydraulic braking force of the front and rear brake cylinders, and then polish the brake disc brake drum.

3. Change the brake fluid.

Road conditions: First of all, the most direct impact on the braking distance is the road condition, the road surface condition determines the friction between the ground and the wheels, the general dry asphalt road braking effect is the best, followed by the cement road. Gravel roads, dirt roads, and wet asphalt roads are less effective for braking.

Vehicle weight: The weight of the car has a direct impact on the braking distance, but it does not mean that the heavy car is necessarily longer than the light weight of the car, for example, some performance cars are much heavier than the family A-class car, but its braking performance is much better, because the tires and braking system should also be considered. The influence of vehicle weight on braking distance is mainly reflected in the fact that for the same vehicle, the greater the loading mass under the same braking system, the shorter the braking distance.

There are many reasons why the braking distance becomes longer, some are brake pad patterns, some are road conditions, and some are brake force changes.

Worn brake pads Severe tire wear Faulty braking system Missing brake fluid.

The standard for replacing brake disc wear is about 2 mm, and if the brake disc is worn beyond this standard, it should be considered to be replaced. Generally, check the brake disc every 60,000 kilometers, and if it is found that the wear is more severe, it is necessary to replace the brake disc as soon as possible to avoid safety problems.

1. It may be that there is a lack of necessary maintenance of the brake system, there are too many impurities in the brake master cylinder, the sealing is not tight, the vacuum booster pump fails, the brake fluid is too dirty or the air resistance occurs after the mixing of several brake fluids and heat.

The braking distance is too long, what's going on:

1. Cause analysis.

1. It is the lack of necessary maintenance of the brake system, there are too many impurities in the brake master cylinder, the sealing is not tight, the vacuum booster pump fails, the brake oil is too dirty or the air resistance occurs after the mixing of several brake oils after heating, the brake master cylinder or sub-cylinder leaks, and the air leakage of the gas tank or pipeline interface;

2. It is due to improper operation that causes the failure of the parts;

3. Due to serious overload, under the action of gravitational acceleration, the inertia of vehicle movement is increased, which directly leads to brake failure.

Second, the treatment method.

1. Control the direction according to the road conditions and speed, disengage the high-speed gear, and at the same time quickly blast the empty fuel and shift the high-speed gear into the low-speed gear. In this way, the engine will have a lot of traction resistance and the speed of the vehicle will be reduced rapidly.

2. If the brake fails when going uphill, it should be reduced to the middle and low gear in time to maintain enough power to drive uphill to the top of the slope and stop.

4. When the downhill brake fails and the speed of the vehicle cannot be controlled by the mechanism of the vehicle itself, the driver should decisively use natural obstacles, such as rocks and trees on the side of the road, to cause resistance to the car.

5. The vehicle should step on the brakes when going down a long slope or a steep slope, regardless of whether there is a situation or not. It can not only test the performance of the brakes, but also buy time to control the speed of the vehicle when the brakes are found to be out of order, also known as predictive braking.

I believe that many drivers have a headache for the braking distance of their car, the new car is in hand, everything is good, but with the increase of use time, various small problems of the vehicle began to emerge, the braking distance became longer, the car noise became larger, etc., which especially the braking distance became longer is particularly terrible.

Four reasons. Generally speaking, there are four inducements for the braking distance to become longer, the more common is the problem of brake oil, there are generally two kinds of problems with brake fluid, the first is the lack of brake oil, resulting in insufficient braking force, in this case, it is not possible to solve the problem simply by supplementing the brake oil, but to figure out why there is a lack of brake fluid, such as whether the brake master cylinder and sub-cylinder have oil leakage, whether the oil pipe is damaged, etc., deal with these problems, and the brake fluid will not continue to be lost.

The deterioration of the brake fluid will also cause the braking distance of the vehicle to become longer, and after the moisture in the brake fluid exceeds the standard, the brake oil pipe will be more likely to expand due to heat, resulting in air resistance, softening of the brakes, and longer braking distance.

If the brake master cylinder or sub-cylinder fails, it will cause the vehicle's brakes to become softer.

If there is no problem with the brake oil brake pump, it may be the pot of the brake pad, I believe we all know that the vehicle brake depends on the brake pad, the brake pad is a wearing part, as long as the brake is stepped on, the brake pad is worn, if the brake pad is not replaced for a long time, excessive wear, at this time, it is easy to feel the abnormality during driving, such as the vehicle braking distance becomes longer, the braking force becomes worse, and even the sharp friction sound can be heard during the braking process.

The last and most common reason that is easily ignored by drivers is that tires are like brake pads, constantly worn out during the vehicle, and when the tires are excessively worn or not replaced for a long time, their grip will decrease, and they will not be able to provide enough grip for the vehicle, and the braking distance of the vehicle will naturally become longer.

Resolution. The four reasons for the longer braking distance of the vehicle mentioned above are brake fluid, brake pads, brake pump and tires, generally speaking, the brake fluid is replaced once when the vehicle is driving 30,000 kilometers, and if the vehicle is used very low, then 60,000 kilometers is OK.

For the problem of brake pads, in most cases, it can be replaced once in 100,000 kilometers, but this is not absolute, mainly depends on the thickness of the brake pads, if it is less than 5 mm, it will be replaced.

There is nothing to say about the brake master cylinder and sub cylinder, go to the repair shop to check, and replace it directly if there is a problem with this part.

If the braking distance of the vehicle becomes longer due to excessive tire wear, it is natural to change the tire, here it is recommended to choose a tire with strong handling, such as the new Pirelli P1 is good, the use of mixed materials, effectively control the tire deformation caused by the force, ensure a stable ground shape, and significantly shorten the braking distance.

Starting from these four aspects, the problem of the vehicle's braking distance becoming longer will naturally be perfectly solved.

Although the braking distance of the vehicle can be shortened, sometimes it is not possible to completely avoid danger, and there are still many tragic accidents, and it is believed that in the process of driving, personal driving habits are the most important.

Extended braking distance: Meaning that the distance from the start of braking to the time of stopping will be extended.

When driving, the time taken from the completion of the braking action to the actual stop is the braking time, and the distance is the braking distance.

The longer braking distance is due to the fact that when moving on the ground, the resistance between the car and the road surface becomes smaller, and the car does not come to a stop easily, and the distance from braking to stopping is extended.

The length of the braking distance is related to the speed of travel, braking force, and adhesion coefficient. The higher the driving speed, the longer the braking distance, and the driving speed is proportional to the square of the braking distance. The smoother the road (e.g. icy pavement), the smaller the adhesion coefficient and the longer the braking distance.

The state of brake oil, brake disc and brake pad is a major reason for the longer stroke of the brake pedal, as the thickness of the brake pad and brake disc becomes thinner, the level of brake fluid will continue to decline, and as the brake fluid that transmits force, the compression must be increased to better complete the braking action, then the natural brake pedal travel will become longer.

Causes of long brake travel:

1. The brake oil pressure is insufficient. (lack of oil in the brake master cylinder, rupture of the brake line, leakage of oil pipe joints, and blockage of the oil circuit).

2. There is air in the braking system.

3. The free stroke of the brake pedal or the gap of the brake is too large, and the friction pads of the brake shoe are in poor contact, serious wear or oil.

4. The brake master cylinder, wheel cylinder piston and cylinder tube are worn or strained, and the leather bowl is aged and damaged.

5. In addition to the brake oil, the state of the brake disc and brake pad is also another major reason for the longer stroke of the brake pedal, as the thickness of the brake pad and brake disc becomes thinner, the level of brake fluid will continue to decline, and as the brake oil that transmits the force, the compression must be increased to better complete the braking action, so the natural brake pedal travel will become longer and longer. Therefore, in daily use, the status of the brake disc and brake pads should also be checked in time, and do not wait until the dashboard indicator light is on to maintain and check.

Road conditions: First of all, the most direct impact on the braking distance is the road condition, the road surface condition determines the friction between the ground and the wheels, the general dry asphalt road braking effect is the best, followed by the cement road.