Is it dangerous for cold tire pressure to increase from 2.5 to 2.9 on the highway?
1 Answers
It is normal for tire pressure to increase when driving on the highway due to rising tire temperature, and it is not dangerous. Tire pressure standards: The maximum tire pressure that a tire can withstand can be found on the sidewall of the tire, usually around 3.5-4.2. However, daily driving does not require such high tire pressure, as it can affect tire friction, adhesion, braking performance, and tire lifespan. However, there is one tire that typically requires higher pressure: the spare tire. When in standby, the spare tire should have higher pressure to avoid losing its emergency function due to low pressure, usually above 2.5. When it's time to use it, adjust the pressure to the appropriate level. Where to check the recommended tire pressure: For accurate tire pressure values, refer to the vehicle's user manual or the label near the door (attached to the B-pillar or C-pillar), where the manufacturer's recommended value (cold tire pressure) can be found. Generally, different vehicle models have different tire pressure requirements. Additionally, tire pressure can be adjusted seasonally. In summer, tire pressure should be slightly lower because high temperatures can cause tires to overheat, and high pressure may lead to blowouts. In winter, tire pressure should be slightly higher than in summer due to thermal contraction and expansion.
