What is the normal tire pressure in kPa?

[OGarrett]

The normal tire pressure is suitable between 2.4 to 2.5 kPa. Tire pressure refers to the air pressure inside the tire. The hazards of excessive tire pressure are: 1. Reduced friction and adhesion of the tire, affecting braking performance and tire lifespan; 2. Decreased puncture resistance, increasing the risk of tire blowouts; 3. Accelerated wear on the central tread pattern, reducing tire lifespan and increasing vehicle vibration; 4. Excessive stretching of tire cords, leading to reduced elasticity of the tire body; 5. Increased susceptibility to punctures from sharp objects like nails and glass, causing internal cracks and blowouts.

[EvelynFitz]

I've been driving a taxi for nearly twenty years and have encountered many tire pressure issues. The normal range is usually around 230 to 250 kPa. It depends on the label on the car, which is usually stuck on the door frame or inside the fuel tank cap. For example, my car clearly states that the cold tire pressure is 240 kPa. In summer, when temperatures are high, tires tend to soften, so I usually let out 5-8 kPa of air to prevent excessive expansion. In winter, you need to check more frequently because the cold weather can cause leaks. I keep a digital tire pressure gauge with me and measure the front and rear tires before each shift, which gives me peace of mind for long trips. Never rely on visual judgment—last time I saw a young guy driving with visibly deformed tires, which was extremely dangerous.

[DianaDella]

As an auto repair technician, I recommend following the manufacturer's specified cold tire pressure values, which typically range between 220 to 260 kPa for most vehicles. In practice, it's crucial to account for tire temperature effects - after highway driving, tire pressure can be 15-20 kPa higher than cold state readings. The most common issue I encounter in the shop is owners overinflating tires themselves. When pressure exceeds 280 kPa, center tread wear accelerates by three times. For loaded conditions, always refer to the vehicle's placard - increase pressure by about 20 kPa when fully loaded. Check pressures at least twice monthly using a mechanical gauge. Note that the left front tire typically runs 5 kPa lower than others due to engine positioning - don't inflate all tires equally.

[Simon]

Over the years of modifying cars, I've found tire pressure significantly impacts handling. For regular street cars, the 230-250 kPa range offers balanced performance, but adjustments are needed for performance driving. For example, we inflate to 280 kPa before track days for better support, then reduce to 240 kPa for daily commuting comfort. Pay special attention to wheel size changes - after upgrading to larger rims, lowering pressure by 10 kPa helps reduce bumpiness. In colder weather, timely pressure top-ups are crucial as tire pressure drops about 7 kPa for every 10°C temperature decrease, which explains frequent winter pressure warnings. Regular checks are far more important than most people realize.

[TimothyFitz]

From a tire engineer's perspective, standard tire pressure isn't a fixed value. Each vehicle model has different requirements based on weight distribution design. Japanese cars typically require 220-240 kPa, while German vehicles often specify 250-280 kPa. The pressure values marked in new car manuals refer to cold tire conditions - measurements taken immediately after turning off the engine should be reduced by 15 kPa for accuracy. I recommend using analog rather than digital tire pressure gauges for more reliable precision. I've witnessed numerous accidents caused by abnormal tire pressure: below 180 kPa increases fuel consumption by 8% and causes sidewall cracking, while above 280 kPa reduces traction, especially making the vehicle prone to skidding in rainy conditions.