
The normal tire pressure range for the Excelle GT 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 follows the international GBT2978-2008 standard. The tire pressure monitoring data for the Excelle GT is displayed on the central dashboard screen. If you don't have a pressure gauge, you can access the tire pressure monitoring system to check the current tire pressure values by operating the combination switch located on the left rear side of the steering wheel to bring up the tire pressure monitoring system interface. Generally, a tire pressure above 2.8bar is considered too high, and 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, reducing driving comfort; accelerates wear on the central tread pattern, shortening tire lifespan; increases vehicle vibration, indirectly affecting the lifespan of other components; overextends the tire cords, reducing tire elasticity and increasing the load on the vehicle 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; weakens the function of cords and rubber, leading to delamination or cord breakage and excessive friction with the rim, causing damage to the bead area and abnormal wear; multiplies friction with the ground, rapidly increasing tire temperature, softening the tire, and drastically reducing its 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), it is usually due to one of the following three reasons: Abnormal tire pressure: Typically, it will alert if the pressure is below 1.8bar or above 3.0bar. In this case, tire inspection and pressure adjustment are required. Tire pressure monitoring not reset: After inflating the tires, if the tire pressure is not reset in time, the system will still record the previous data, causing the tire pressure monitoring indicator to light up. Simply perform a tire pressure reset to resolve this. Damaged tire pressure sensor: The tire pressure sensor, used to monitor tire pressure, is installed inside the tire and connected to the tire inflation valve. If the sensor is damaged during driving, it will also trigger the tire pressure warning light. For sensor damage issues, the only solution is to replace it with a new part.

I've been driving the Buick New Excelle for three years, and tire pressure really depends on the situation. Generally, it's recommended to maintain around 2.3 to 2.5 bar when the tires are cold, which can be found on the label on the door frame or in the manual. I make slight adjustments based on the season during daily use—reducing it to about 2.2 bar before high-speed driving in summer to prevent blowouts, and inflating to 2.6 bar in winter for better traction. It's best to keep a portable air pump in the trunk; I check it every month, especially during seasonal changes. Keeping the front tires slightly higher than the rear tires by no more than 0.3 bar can improve steering precision. Remember to increase the pressure by about 0.2 bar when carrying heavy loads—once, I didn't adjust the pressure during a fully loaded road trip, and the tire wear was noticeably uneven.

During the last maintenance, the technician told me that the standard tire pressure for the Buick Excelle GT most commonly ranges between 33 to 36 psi. The key is to measure it at the correct time, preferably in the morning before driving when the tire temperature hasn't risen. There's a silver label on the lower edge of the left front door of my car, clearly stating that for 235/45R17 tires, the corresponding pressure is 2.4 bar. It's important to note that significant differences in tire pressure should be avoided, as a maximum difference of 0.5 psi between the four wheels can affect braking distance. I make it a habit to set a monthly reminder on my phone and find that checking with a mechanical tire pressure gauge is more reliable than the onboard sensors. Additionally, when fitting new tires, inflate them to the maximum recommended value and adjust back to the standard pressure after driving 500 kilometers.

As a frequent long-distance driver, I find tire pressure management more crucial than imagined. The recommended tire pressure for the new Excelle typically ranges between 2.3-2.5 bar, but it actually depends on usage scenarios. For urban commuting, using the lower limit saves fuel and provides comfort, while increasing to the upper limit during highway driving enhances stability. A handy trick is to press the sidewall with your finger to check - normally, a 0.5 cm depression is about right. Don't forget the spare tire either; I keep mine at 3.0 bar year-round to prevent aging and air leakage. Always perform wheel balancing after tire repairs - once I skipped this and it caused steering deviation. I suggest checking tire pressure every two fuel fills, and more frequently in areas with significant temperature variations.

The salesperson specifically emphasized tire pressure maintenance when I picked up the car. The standard for the Buick New Excelle is around 2.4 bar for all four tires. The exact value depends on the tire size: the base model with 16-inch tires can be slightly lower at 2.3 bar, while the high-end model with 18-inch tires is recommended at 2.5 bar. Once, I noticed abnormal tire pressure and found slight deformation in the rim, so now I always have the mechanic check it during car washes. After installing wider tires, the pressure should be reduced by 0.1-0.2 bar, which modification shops often overlook. Insufficient tire pressure causes faster wear in the middle, while overinflation leads to premature wear on the sides. If you notice abnormal pressure on one side, check the suspension system—once, a leaking shock absorber caused unstable pressure in the right front tire.


