Shane Louwerens is a John Deere Ag Tech Instructor at Northwest Mississippi Community College. *This recommended inflation pressure is the minimum required to carry the load and must be maintained. 4WD and Track Tractors (370-620 Engine HP), Gator™ Utility Vehicles Attachments & Accessories, Compact Construction Equipment Loans & Leases. D is rated for 65 km/h (40 mph). 467-mm section width tire, International load index numbers (per tire). As the tires heat up, air molecules expand. According to this chart the 43-16 - 20 rear R4 tires match what my tires say. To obtain accurate readings, check pressure when the tractor, and tyres, are cold. Tire Inflation Pressure Charts. Reference the 8R Series Tractor tire offerings story for 8R front and rear tire matching guidelines. Limit wet conditions that can make it easier for objects to cut or puncture tires. The figures shown in the charts are the rated pressure for the load ... Operating tractor with tires inflated at lower pressure will improve traction and could reduce ballasting requirements; however, inflation pressure must be sufficient enough to carry the axle load of the tractor with an implement. Tractor Deere 316 (Kohler) Deere 316 (Onan) Deere 210. B is rated for 50 km/h (31 mph). When tires are cold, the air molecules constrict. Re: John Deere mower tire pressure The manual's recommendation will give you the softest ride. The purpose of this requirement is to reduce assembly run out in order to provide improved ride quality. 520/85R42 158 A8 R1520 = tire section width (mm) by 25.4 to get millimeters, Example: Proper inflation increases traction and tire life. A8 is rated for 40 km/h (25 mph). Deere & Company. by 25.4 to get inches, Example: R = radial construction The fronts are 27- 8.5 - 15 R4 and my tires say 35 Max. Match tire pressures to the application, whether sand, gravel, rock or topsoil. 158 = load index R = radial construction 2020 A8 = speed symbol The metric tire rating system allows manufacturers to design tires that better meet specification requirements for diameter-to-width and rolling circumference dimensions, which are critical for MFWD tires. 18.4-in. But I generally run 20 in the fronts and 15 in the rears. For additional tire pressure information for your specific application, refer to the tire manufacturer information or contact your John Deere dealer. The low point of the tire radial run out and the high point of the wheel assembly are determined by measurement and marked by the supplier. divide the metric number (in mm) *Grain Cart and Combine maximum in field speed allowable for up to 1 Mile. Refer to tire manufacturer load/pressure tables or contact your equipment dealer for proper pressures by application. Maintain proper tire pressure to maximize total work cycles. Match tire pressures to the application, whether sand, gravel, rock or topsoil. metric conversion: Specific tire information is often available from the tire manufacturer, dealer, or the John Deere online configurator/Build Your Own tool. For additional tire pressure information for your specific application, contact your John Deere dealer. ... A forum community dedicated to John Deere tractor owners and enthusiasts. 85 = aspect ratio (percentage of sidewall height to section width) NOTE: Pressures listed are the standard factory inflations. All Rights Reserved. Speed symbol - The top speed a tire is designed to travel. Understanding tire group size is important for proper tractor setup when equipped with a mechanical front-wheel drive (MFWD). Turning radius is measured from the center of the turn to the center of the outside tire (1). section width X 25.4 = multiply English number (in inches) Adding tractor tire fluids to tires can negatively impact your tractor’s ride quality, especially when loading the rear tires, according to John Deere. OEM tire manufacturers offer load and inflation tables used to set tire pressure based on the size of the tire, the tractor’s intended speed, and weight applied to the axle (Figure 1). Reference the 7R Series Tractor tire offerings story for 7R front and rear tire matching guidelines. Slower speeds allow more time to see and avoid obstacles. Refer to tire manufacturer load/pressure tables or contact your equipment dealer for proper pressures by application. And that can have a severe financial impact on your wallet. to-English conversion: Tire Inflation Pressure Charts. 18.4 = tire section width (inches) R1 = tread designationNOTE: Detailed tire terminology definitions are described below.Â, Formula for metric- Running tractor tyres at the wrong pressures can have a dire effect on tractor performance, tyre wear, and soil compaction. Tire terminology for both standard and metric tires is described below.Standard size tire18.4R46 Manage tires remotely with telematics systems such as JDLink™. 480-mm section width/25.4 = 46 = rim diameter (inches) (this is not the total tire height or group size)Metric size tire Slow Down. For more information, call 1-800-847-3364 NOTE: Pressures listed are the standard factory inflations. Minimize transport distances and sharp turns. The speed symbol designation alone does not determine suitability for use on 50 km/h tractors. 42 = rim diameter (inches) (this is not the total tire height or group size) 18.89-in. *For operations on slopes less than or equal to 11 degrees (20%) lateral slope. He says tire pressure fluctuates with temperature changes. Tire/wheel assemblies for 50-km/h tractors are specified by John Deere to tighter run out (the amount of sideways motion or wobble in a wheel or tire as it rotates) requirements than for non-50-km/h tractors. Designs offered are all lug- or bar-type tires and are separated into one of three specifications: R1, R1W, or R2. How to Determine Tractor Tire Pressure by admin on Tue, 12/09/2014 - 00:58 I've witnessed the results of several people applying too much pressure in their rear tractor tires. This assembly process is referred to as match mounting.Tread designation - The tread designation is used to describe the tread and indicate tire usage. Copyright © In extreme conditions, rear tire pressure may have to be raised to 18 to 20 psi or higher before hop is cured (smaller tires will require the highest amounts of pressure to fix hop). Disengage differential locks when additional traction isn't needed. The low point of the tire is aligned with the high point of the wheel during assembly by the supplier.

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