𝐖𝐡𝐲 𝐝𝐨 𝐬𝐥𝐨𝐰𝐞𝐫 𝐟𝐢𝐞𝐥𝐝 𝐬𝐩𝐞𝐞𝐝𝐬 𝐚𝐥𝐥𝐨𝐰 𝐡𝐢𝐠𝐡𝐞𝐫 𝐰𝐞𝐢𝐠𝐡𝐭 𝐜𝐚𝐫𝐫𝐲𝐢𝐧𝐠 𝐜𝐚𝐩𝐚𝐜𝐢𝐭𝐲 𝐨𝐫 𝐥𝐨𝐰𝐞𝐫 𝐚𝐢𝐫 𝐩𝐫𝐞𝐬𝐬𝐮𝐫𝐞 𝐢𝐧 𝐀𝐠𝐫𝐢𝐜𝐮𝐥𝐭𝐮𝐫𝐚𝐥 𝐓𝐢𝐫𝐞𝐬?
Air pressures used in the field at slow speeds versus out of the field at higher speeds can vary depending on the load capacity requirements. With CTIS Systems (Central Tire Inflation System) becoming more common, a user can change air pressures for the application.
Running at higher speeds requires higher air pressures to carry the weight. Higher air pressure reduces the flex of the sidewall and helps dissipate the heat that a tire generates. If higher air pressures are not used at higher speeds and higher loads, the heat will destroy the tire.
At slower field speeds, air pressures can be reduced and can still carry a heavier load. Slower speeds do not generate heat as fast and can dissipate more quickly. Reduced air pressure at slower speeds allows for a larger footprint for traction and reduced soil compaction.
As shown in the Load and Inflation Chart, when speed increases, so must air pressure. As speed decreases, air pressure can be reduced.