Whenever a car deviates, I believe that the first reaction of many people is to do four-wheel alignment. In fact, there are many kinds of car deviates. The reasons for the deviation vary from big to small. It is not necessarily that four-wheel alignment can solve these problems. Now, we will gradually solve these problems.

下面進入正題，引起汽車跑偏的有哪兒些原因

Now let's get to the point. What are the causes of car deviation

車輪胎壓

Tire pressure

當兩側(cè)輪胎的胎壓相差較大時，車輛就極易發(fā)生跑偏現(xiàn)象。其實這個不難理解，在正常路面上行駛，當兩側(cè)輪胎的胎壓相差較大時，它們接觸地面的面積也是不同的，氣壓更低的輪胎摩擦力更大，所以在這種情況下，車輛會向出現(xiàn)低胎壓輪胎的一側(cè)跑偏。所以，當發(fā)現(xiàn)車輛有跑偏現(xiàn)象時，可以先檢查一下兩側(cè)的胎壓是否正常。

When the tire pressure difference between the two sides is large, the vehicle is prone to run off. In fact, this is not difficult to understand. When driving on normal roads, when the tire pressures of the two sides are quite different, their contact area with the ground is also different. The tire with lower air pressure has greater friction. Therefore, in this case, the vehicle will deviate to the side with low tire pressure. Therefore, when it is found that the vehicle deviates, you can first check whether the tire pressure on both sides is normal.、

剎車系統(tǒng)

Brake system

當車輪兩側(cè)的剎車力度不一樣時，剎車時車輛就會立刻發(fā)生跑偏現(xiàn)象。因為車輛在剎車時，兩側(cè)剎車力度不同，一側(cè)的車輪剎車力度大于或小于另一側(cè)的車輪剎車力度，就會產(chǎn)生“差速”（兩側(cè)的輪胎轉(zhuǎn)動速度不同），就會發(fā)生車體偏向轉(zhuǎn)動輪更慢的一側(cè)。當汽車剎車時發(fā)現(xiàn)跑偏更嚴重時，應(yīng)該立刻去檢查剎車系統(tǒng)，一般都是由于剎車泵出現(xiàn)問題，剎車片不能正?；匚粚?dǎo)致跑偏。

When the braking force on both sides of the wheel is different, the vehicle will immediately deviate when braking. Because when the vehicle is braking, the braking force on both sides is different, and the braking force of one side of the wheel is greater than or less than that of the other side, there will be "differential" (the rotation speed of the tires on both sides is different), and the car body will deviate to the side with slower rotation wheel. When the car brake found that the deviation is more serious, should immediately check the brake system, generally due to the brake pump problems, the brake pad can not return to normal, leading to deviation.

四輪定位

Four wheel positioning

對于行駛一段時間的車輛來說，四輪定位數(shù)據(jù)的變化也會導(dǎo)致出現(xiàn)跑偏現(xiàn)象。特別是經(jīng)常走坑洼路面的車輛，四輪定位的參數(shù)更容易發(fā)生變化，這個時候去正規(guī)的的維修店做四輪定位即可。注意，一定要去正規(guī)有保證的維修店做四輪定位，如果四輪定位做的不好，那么對車輛的影響還是很大的。

For the vehicle driving for a period of time, the change of four-wheel alignment data will also lead to the phenomenon of deviation. Especially for vehicles that often walk on potholes, the parameters of four-wheel alignment are more likely to change. At this time, you can go to a regular maintenance shop to do four-wheel alignment. Note that you must go to a regular and guaranteed repair shop to do four-wheel alignment. If the four-wheel alignment is not done well, it will have a great impact on the vehicle.

車身配重

Body counterweight

這個是更容易解決的。當車輛內(nèi)放的物體較多，兩側(cè)的重量不平衡時，車輛也會出現(xiàn)跑偏現(xiàn)象。這里說的主要是經(jīng)常拉重物的貨車，特別要注意貨物左右擺放均勻。如果重物經(jīng)?？恳粋?cè)擺放，可能導(dǎo)致的問題 ，即使當時沒有發(fā)生跑偏，經(jīng)常左右擺放不均勻可能會導(dǎo)致輪胎左右磨損不平均，久而久之也會因為輪胎摩擦力不對稱造成跑偏。

This is the easiest one to solve. When there are many objects in the vehicle and the weight on both sides is unbalanced, the vehicle will also deviate. Here we are talking about trucks that often pull heavy loads. We should pay special attention to evenly placing the goods on the left and right. If the heavy objects are often placed on one side, it may cause problems. Even if there is no deviation at that time, the uneven placement on the left and right may lead to uneven wear on the left and right sides of the tires. Over time, it may also cause deviation due to the asymmetric friction of the tires.

懸掛系統(tǒng)

Suspension system

懸掛的變形、松散，也會導(dǎo)致車輛發(fā)生跑偏現(xiàn)象。這可能是由于日常行駛造成的磨損和老化，如果是下擺臂等部件出現(xiàn)了變化或者是間隙過大，調(diào)整或者更換零件就可以解決了。

The deformation and looseness of suspension will also lead to vehicle deviation. This may be due to wear and aging caused by daily driving. If the lower arm and other components change or the clearance is too large, it can be solved by adjusting or replacing parts.

車體車架

Car frame

車架在受到嚴重的撞擊后發(fā)生跑偏，這就麻煩了。因為發(fā)生事故造成的車體變形、車架受損等問題造成的跑偏，需要大面積更換零件甚至要進行車架校正才可能完全恢復(fù)。

The frame deviates after being hit seriously, which is troublesome. Because of the car body deformation, frame damage and other problems caused by the accident, it is necessary to replace parts in a large area, or even to correct the frame before it can be completely recovered.

簡單的說，車輛跑偏時，我們可以從輪胎、剎車、配重、懸掛等方面入手檢查，從而把跑偏問題給解決掉，而不是只想到四輪定位參數(shù)改變這一個問題，多了解汽車的狀態(tài)，才能保養(yǎng)好自身的愛車。不忽略每一個部分，讓愛車陪伴安全出行，也讓自己安心省心。

In short, when the vehicle deviates, we can start from the tire, brake, counterweight, suspension and other aspects to check, so as to solve the problem of deviation, instead of just thinking about the problem of changing the four-wheel alignment parameters. Only by knowing more about the state of the car can we maintain our car. Don't ignore every part, let your car accompany you to travel safely, and let you feel at ease.