The Zetor Proxima 6421 tractor is listed with a 9.00-16 front tire and a 16.9-30 rear tire.
Zetor Proxima 6421 Tire Size Chart
| Configuration | Tire size |
|---|---|
| Agricultural front | 9.00-16 |
| Agricultural rear | 16.9-30 |
| Recommended tire pressure | The recommended tire pressure for the Zetor Proxima 6421 is approximately 20-23 psi for rear tires and 22-26 psi for front tires. Adjusting tire pressure is important for optimal performance and safety. |
Match the complete sidewall size, rim diameter, axle position, 2WD/4WD configuration and tire type before ordering. On driven front axles, changing overall tire diameter can upset the required front-to-rear rolling ratio.
Tire Pressure
Pressure warning: Confirm the correct pressure in the official operator’s manual and the tire manufacturer’s load-and-pressure chart before inflation.
Wheelbase and Ground Clearance
| Wheelbase | 90 inches 228 cm |
|---|---|
| Ground clearance | 22 inches 55 cm |
These specifications are provided as a reference and may vary by production year, country, axle, wheel package and previous tire changes. Before purchasing, fitting or inflating tires, confirm the specifications using the Zetor official U.S. website, the official operator’s manual and the markings on the tires currently fitted.




