What should be the minimum tread depth for the steering wheel tires of a truck?
3 Answers
The tread depth for the steering wheel tires of a truck should be no less than 3.2 millimeters. Here are specific details about truck tires: 1. Truck tire pressure: Tire temperature varies depending on driving conditions and weather. Generally, maintaining a tire pressure between 2.4-2.6 is considered normal for trucks, and it is recommended to check the tire pressure once a week. 2. Nitrogen inflation: During summer, road surface temperatures often exceed 70℃. For trucks driving long distances in hot summer conditions, tires with damage or weak spots are prone to blowouts due to excessive tire pressure. Affected by temperature, the gas inside the tires will expand automatically, increasing the tire pressure from 2.3 kg to over 3 kg. To ensure proper tire pressure, it is advisable to inflate tires with nitrogen in summer, and the filling pressure should be reduced by 10%.
I've been driving for over ten years, often doing long-haul trucking. The tread depth of the steering tires absolutely cannot be shallow—the standard requires no less than 3.2 millimeters, which is the legal minimum. I remember one time when the tire tread was worn down to about 2.5 millimeters, I felt unstable control during turns, especially in rainy weather when it was prone to skidding—it was too dangerous. So now, before every trip, I use a simple tread depth gauge to check. Driving a truck isn’t like driving a car—the steering tires directly affect handling safety. I recommend you have the technician measure them during regular maintenance—don’t wait until an accident happens to regret it. One more thing to remind you: other tires, like the rear ones, can be slightly shallower, but the steering tires are the top priority.
Back in the day when we older generation drove trucks, the standards weren't as strict. With technological advancements nowadays, the tread depth of steering tires must be maintained above 3.2mm to be considered safe and compliant. I learned the hard way in my youth - shallow treads could easily lead to fines and even affect insurance claims. Inspection methods are much simpler now, even roadside stalls can measure it with gauges. I make it a habit to check tire conditions every three months, and replace them promptly if they fall below 3mm. This isn't just about saving money - it's a matter of life and death. Especially on highways, deeper treads mean better braking performance and help prevent rollovers. Here's another tip: pay attention to all tires, but never cut corners with steering wheels.
