What is the correct tire pressure for skid steer tires?

Correct tire pressure is one of the most critical, yet often overlooked, factors for the performance, safety, and longevity of your skid steer tires. Unlike passenger vehicles, skid steers operate under extreme loads and on varied terrains, making proper inflation even more essential. Getting the pressure right can improve machine stability, increase traction, extend tire life, and even save on fuel costs.

How to Find the Right PSI

The simple answer to "What is the correct tire pressure?" is that there is no single universal number. The ideal PSI (Pounds per Square Inch) depends on three main factors:

1. The Tire's Sidewall Rating: Every skid steer tire has a maximum PSI stamped on its sidewall. This is the absolute maximum pressure the tire can handle safely, not the recommended operating pressure. You should never exceed this number.

2. The Manufacturer's Recommendation: Your skid steer's owner's manual will provide a recommended tire pressure range based on the machine's weight and design. This is your best starting point.

3. Your Specific Application: This is where the real expertise comes in. The optimal pressure will change based on the job.

• For Heavy Lifting & Stability: If you're consistently using the machine to lift heavy loads, a higher PSI (within the manufacturer's range) will provide the necessary stability and prevent the tire sidewalls from flexing excessively under load.

• For Traction & Soft Surfaces: When working on soft or loose surfaces like mud or sand, a slightly lower pressure can increase the tire's footprint, providing better flotation and traction. Be cautious, however, as this can lead to faster tire wear on hard surfaces.

The Dangers of Incorrect Tire Pressure

Operating your skid steer with improperly inflated tires can lead to several costly problems.

Underinflation (Too Little Air):

• Accelerated Tire Wear: The tire's sidewalls will flex more, causing them to generate heat and wear out prematurely. The outer edges of the tread will also wear down much faster than the center.

• Reduced Stability: The machine will feel "spongy" and unstable, especially when carrying a load, which is a major safety hazard.

• Increased Fuel Consumption: A soft tire increases rolling resistance, forcing the engine to work harder and burn more fuel.

• Puncture Risk: The tire is more susceptible to pinching and damage from sharp objects.

Overinflation (Too Much Air):

• Reduced Traction: The tire's contact patch with the ground becomes smaller, significantly reducing grip and making the machine more prone to slipping.

• Harsh Ride: The lack of a cushion from the air makes for a very rough ride, which is uncomfortable for the operator and puts unnecessary stress on the machine's components.

• Center Tread Wear: The center of the tire will balloon out, causing the middle section of the tread to wear out much faster than the edges.

• Increased Puncture Risk: An overinflated tire is taut and rigid, making it more likely to be punctured by a sharp object rather than deflecting it.

Practical Tips for Tire Pressure Maintenance

To ensure your skid steer tires are always at the correct pressure, follow these best practices:

• Check Daily: Get into the habit of performing a quick visual check before each use.

• Use a Reliable Gauge: Don't rely on a simple pencil gauge. Invest in a high-quality, sturdy gauge designed for truck or off-road tires.

• Check When Tires Are Cold: Always check tire pressure before the machine has been operated for a significant amount of time. Driving heats the air inside the tires, which will give you a misleadingly high reading.

• Check All Tires: It's a common mistake to check only the tires that "look" soft. Uneven pressure across the machine can negatively impact its handling.

By taking the time to properly maintain the tire pressure, you are not only ensuring the safety and performance of your skid steer but also protecting your investment in your skid steer tires.