What is the normal tire pressure for Changan Unit?

[CatherineLee]

The normal tire pressure for Changan Unit is 2.2 to 2.5 bar, and the specific value can be adjusted by yourself. Hazards of excessive tire pressure: The friction and adhesion of the tire will decrease, affecting braking performance; it can cause steering wheel vibration and deviation, reducing driving comfort; it accelerates the localized wear of the tread pattern in the center of the tire, shortening the tire's lifespan; the vibration of the vehicle body increases, indirectly affecting the lifespan of other components; it causes excessive stretching and deformation of the tire cords, reducing the elasticity of the tire body and increasing the load on the vehicle during driving. Hazards of insufficient tire pressure: The friction coefficient with the road surface increases, leading to higher fuel consumption; it makes the steering wheel heavy and prone to deviation, creating factors that are unfavorable for driving safety; it increases the movement of various parts of the tire, causing abnormal heating due to excessive rolling; it reduces the functionality of the cords and rubber, leading to delamination or breakage of the cords and excessive friction with the rim, causing damage to the bead area and abnormal wear.

[EliRose]

I've been driving the Changan UNI-T for over two years, and the optimal tire pressure for this car is usually maintained between 2.3 and 2.5 bar. I usually measure all four tires with a portable tire pressure gauge, and the readings are most accurate when the car is cold. During hot summer days, the tire pressure tends to rise, so I keep it around 2.4 to prevent overheating and blowouts; in winter, I inflate it to around 2.5 to improve traction. Once during a long trip, I noticed the steering wheel shaking a bit, and it turned out the left rear tire was only at 1.9—after topping it up, everything returned to normal immediately. It's important to check the tire pressure at least once a month. Keeping an electric air pump in the car is also quite convenient, allowing you to top up whenever you notice a drop. This way, the tires last longer, and the drive remains stable.

[LaMatteo]

Monitoring tire pressure is essentially about ensuring driving safety. The UNI-T has a tire pressure label on the driver's side door frame, indicating 2.3 when unloaded and 2.5 when fully loaded. I measured the width of the tire's contact patch with a steel tape measure, and the contact area is only uniform when the tire pressure is within the normal range. If it's too low, the sides of the tire wear out quickly, and the tire noise becomes particularly loud; if it's too high, the middle part bulges, increasing the braking distance. I didn’t understand this before, and once inflated all four tires to 2.8, which made the ride extremely bumpy when hitting potholes on the highway. Now, I frequently use the free air pumps at gas stations, as adjusting the pressure is quick. During regular maintenance, I also ask the mechanic to check for uneven tire wear.

[TuckerLee]

The most discussed topic in the car enthusiast group is the UNI-T tire pressure issue. Veteran drivers all agree that around 240 kPa is the most balanced. I top up the air whenever the tire pressure monitoring shows it's below 2.0, especially in winter. Last month, when the temperature dropped suddenly, the alarm went off right after starting in the morning. After modifying the rims, paying attention to tire pressure becomes even more crucial. One of the group members inflated their thin tires to 2.8, resulting in two tires being ruined in three months. The spare tire's air pressure is even more important. Once, I got a flat tire on the road and found the spare was only at 1.5, which caused a lot of trouble. Now, when I get my car washed, I always remind the workers not to adjust my tire pressure. Setting the cold tire pressure to a preset value of 2.4 myself is much more worry-free.