At what tire pressure level should driving be discontinued?

[StZoey]

Tire pressure below 1.7 bar should not be used for continued driving. The hazards of insufficient tire pressure are as follows: 1. Increased friction coefficient with road surface leads to higher fuel consumption. 2. Causes heavy steering and potential alignment issues, compromising driving safety. 3. Amplifies movement in all tire components, generating abnormal heat through excessive compression. 4. Degrades cord and rubber functionality, potentially causing ply separation, cord breakage, or rim friction damage to bead areas and irregular wear. 5. Exponentially increases ground friction, rapidly raising tire temperature and softening rubber, drastically reducing strength. High-speed driving may trigger blowouts. 6. Low pressure excessively deforms the carcass, promoting sidewall cracks and flexing movements that generate overheating, accelerating rubber degradation, ply fatigue, cord fractures, while enlarging contact patches to accelerate shoulder wear.

[LeElijah]

Don't drive if your tire pressure is 20% below the normal value - it's extremely dangerous. For example, if your vehicle's label specifies 30 psi, you should stop driving when it drops below 24 psi. Driving with low tire pressure will noticeably worsen your car's handling: the steering wheel feels heavier and may wobble unpredictably. On highways, underinflated tires are prone to overheating and blowouts - I've witnessed numerous accidents caused by this oversight. Additionally, fuel consumption increases by over 10%, and tires wear unevenly, leading to higher replacement costs. I recommend purchasing a small tire pressure gauge for weekly checks or using a mobile app for monitoring. If you notice low pressure before a trip, find the nearest gas station to inflate them. Tire pressure drops faster in cold weather, so be extra vigilant during winter. Remember: safety is no trivial matter - don't risk driving just to save a few minutes.

[DelRichard]

As someone who often drives to pick up family members, I pay close attention to tire pressure issues. Generally, if the tire pressure is 25% below the recommended value, I have to stop. For example, when the standard is 35psi, driving is not advisable if it drops below 27psi. Low tire pressure reduces the tire's support capacity, making it prone to sidewall cracks or blowouts, especially when turning on slippery roads. I once neglected this, driving home with tire pressure as low as 20psi, which resulted in tire deformation and a costly 800-yuan replacement. Now, I always keep a tire pressure gauge in my car and check before long trips. Low tire pressure not only damages the car but also increases fuel costs by 10%, making it uneconomical in the long run. Parents, in particular, should pay attention to this issue, as ensuring family safety is paramount. Remember, the standard values are listed on the door frame label, so check them regularly.

[LeLondyn]

Driving with low tire pressure is unsafe. From a mechanic's perspective, you must stop if it's 15-20% below the manufacturer's recommended value. For example, if 30psi is normal, don't drive if it's below 24 or 25psi. There are three reasons: tires overheat easily and may blow out, which is especially deadly on highways; loss of control can cause accidents; and fuel consumption surges while tires wear out faster. A simple solution is to use a gauge to measure—if it's below the critical value, inflate or call for assistance. Don't underestimate this; weather changes also affect tire pressure.