For farmers and growers working on hilly fields poses a unique challenge.
However, there are many ways they can optimize their equipment to perform in varying plots of land. Using proper inflation, along with the right tire for the application, farmers and growers can get the best from their equipment no matter what they’re working with.
The Importance of «Cold» Inflation Air Pressure
The “cold” inflation air pressure or air pressure management is the key to optimizing how the tire will perform.
Sidehill or hillside applications require some adjustments to the air pressure to allow radial tires to deliver performance despite the additional forces working on the tire. There are three primary reasons to increase cold air inflation when in sidehill or hillside operations:
- Improved tire seating on wheel
- Reduced sidewall flexing
- Even tire footprint and contact
How Hill Slope Impacts Ag Tires
The challenge for any farmer or grower is adjusting to the performance demands of hillside operations.
Here’s how grade is calculated using slope:
Tangent of Slope Angle or Grade = Vertical Rise / Horizontal Distance.
Percent Grade % = 100 x Tangent of Slope Angle.
Examples:
- 15° Slope is a 26.8% grade
- 20° Slope is a 36.4% grade.
- 30° Slope is a 57.7% grade.
The grade (steepness) plays a key factor in how pressure is adjusted to ensure the additional forces don’t affect the tire’s ability to operate safely on any hillside. Follow these key safety tips to operate your equipment effectively:
Air Pressure Recommendations Based on Grade
Below, MAXAM recommends additional air pressures to operate either standard or VF tires on any agricultural equipment based on the grade % or slope/steepness:
Keep in Mind:
- Up to 20% Grade: Increase by +5 PSI versus normal cold inflation operating air pressure.
- 20-30% Grade: Consult MAXAM for necessary adjustments.
- Above 30% Grade: Not recommended due to safety concerns.
Using the right air pressure on any field or hillside operation will ensure you can achieve peak performance from your Ag tires. Be sure to refer to this helpful guide and many others to get the best from your Ag tires. Interested in learning more? Check out this helpful how-to on the best ways to choose an agricultural tire.
