What is the appropriate tire pressure for the Haval Big Dog?
3 Answers
The normal tire pressure range for the Haval Big Dog is 2.4-2.5bar. Due to seasonal factors, the tire pressure can be appropriately increased by 0.2bar in winter and decreased by 0.1bar in summer. This data is based on the international GBT2978-2008 standard requirements. The Haval Big Dog is equipped with a tire pressure monitoring function. After starting the car, you can access the tire pressure monitoring feature via the settings button on the steering wheel to check the specific tire pressure values. Generally speaking, a tire pressure above 2.8bar is considered too high, while a tire pressure below 2.0bar is considered too low. Hazards of overinflated tires: Reduced tire friction and adhesion, affecting braking performance; causes steering wheel vibration and deviation, lowering driving comfort; accelerates wear on the central tread pattern, shortening tire lifespan; increases vehicle vibration, indirectly affecting the lifespan of other components; overstretches the tire cords, reducing elasticity and increasing the load on the car during driving. Hazards of underinflated tires: Increases friction with the road surface, leading to higher fuel consumption; makes the steering wheel heavy and prone to deviation, compromising driving safety; increases movement in various parts of the tire, causing abnormal heat due to excessive rolling; reduces the functionality of cords and rubber, leading to delamination or cord breakage, and excessive friction with the rim, damaging the bead area and causing abnormal wear; multiplies friction between the tire and the ground, rapidly raising tire temperature, softening the tire, and drastically reducing strength. High-speed driving may result in a tire blowout. If the tire pressure monitoring indicator light comes on (a yellow symbol with an irregular circle, no stamp on top, four small spikes at the bottom, and an exclamation mark inside), there are generally three possible reasons: Abnormal tire pressure: Typically, an alarm is triggered when the pressure is below 1.8bar or above 3.0bar. In this case, the tire needs to be checked and the pressure adjusted. Tire pressure monitoring not reset: After inflating the tire, if the tire pressure is not reset promptly, the system will still record the previous data, causing the tire pressure monitoring light to stay on. Simply reset the tire pressure to resolve this issue. Damaged tire pressure sensor: The tire pressure sensor, installed inside the tire and connected to the inflation valve, monitors tire pressure. If the sensor is damaged due to impact while driving, the tire pressure warning light will illuminate. For sensor damage, the only solution is to replace it with a new one.
Having driven the Haval Big Dog for over two years, I pay special attention to tire pressure. Normally, maintaining it between 2.3 to 2.5 bar when the car is cold is ideal. In summer, due to thermal expansion, I adjust it to the lower limit of 2.3 in the morning before heading out; otherwise, by noon when driving on the highway, the tire pressure can soar to 2.7, making the steering wheel noticeably heavier. In winter, I inflate it to the full 2.5 for better stability on bumpy roads. Higher tire pressure saves fuel but makes the ride bumpier, especially noticeable when traveling with family. Lower tire pressure increases fuel consumption and can cause cracks on the tire sidewalls. Once, I drove for two weeks with the tire pressure at 2.0, and when I took it off, the tread was visibly worn unevenly. Now, I’ve made it a habit to check the tire pressure twice a month with an electronic tire pressure gauge. The most accurate readings are taken five minutes before leaving in the morning.
Tire pressure has a huge impact on safety, and I've experienced it firsthand. Last winter, I drove on the highway with a tire pressure of 2.1 bar, and I clearly felt insufficient grip when turning. Later, I found out that when the pressure is below 2.3 bar, the tire contact surface deforms significantly, doubling the risk of a blowout. Now, I maintain my tire pressure at 2.4 bar year-round, a value that balances both safety and fuel economy. Actual tests show that for every 0.5 bar decrease in tire pressure, fuel consumption increases by 0.3 liters per 100 kilometers. Although the built-in tire pressure monitoring system in the car is convenient, I still keep a mechanical tire pressure gauge as a backup, as it's less prone to failure. Before long trips, I always check if all four tires are balanced, and I increase the frequency of checks during seasons with large temperature variations.
