The New Holland 6640 tractor is listed with a 7.50-16 front tire and a 16.9-30 rear tire.
New Holland 6640 Tire Size Chart
Configuration
Tire size
Agricultural front
7.50-16
Agricultural rear
16.9-30
Recommended tire pressure
The recommended tire pressure for a New Holland 6640 typically ranges from 18 psi to 24 psi; depending on the load and conditions. It’s important to consult the specific manual for your tractor model for precise guidelines.
Before buying replacement tires
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
Recommended tire pressure: The recommended tire pressure for a New Holland 6640 typically ranges from 18 psi to 24 psi; depending on the load and conditions. It’s important to consult the specific manual for your tractor model for precise guidelines.
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
93 inches 236 cm
Ground clearance
22 inches 55 cm 20 inches 50 cm
Specification disclaimer
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 New Holland official U.S. website, the official operator’s manual and the markings on the tires currently fitted.
