Does a BMW need air refill when cold tire pressure is 2.3?

[VanGenevieve]

No. When cold weather causes tire pressure to drop below 2.2, then the car tires need inflation. If the tire pressure remains between 2.2 and 2.5, no inflation is required because this range represents normal tire pressure values. Reasons for decreased tire pressure: Primarily due to thermal expansion and contraction. When outdoor temperatures drop in winter, tire pressure decreases under this effect. Inappropriate failure to increase pressure during this period not only increases fuel consumption but also accelerates tire wear. However, pressure shouldn't be excessively high as it would significantly reduce friction between tires and road surface, weakening braking performance. Solutions for low tire pressure: When tire pressure is too low, driving should be avoided. Promptly visit professional repair shops for tire inflation and pressure replenishment. Every vehicle's matched tires have corresponding pressure specifications, and tire pressure directly affects tire performance and responsiveness while influencing fuel consumption to some extent. Therefore, immediate inflation is necessary when low pressure is detected.