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John Deere 7800 tire size

Factory tire pairs for the John Deere 7800 (170 HP, ?):

  • 170 HP
Rear20.8R38Front16.9R28
Rear20.8R38
Outside dia.
1,849mm
Width
516mm
Rim
38″
tube-type equivalent: 20.8-38
Front16.9R28
Outside dia.
1,425mm
Width
418mm
Rim
28″
tube-type equivalent: 16.9/14-28

The tires on the tractor may not be original. A different size from the factory one can damage the transmission, especially on 4WD.

Take it to your tire shop: tractor-size.com

4WD ratio check and other tools →

Source: tractorgearbox.com

FAQ

What is the front tire size of the John Deere 7800?

The John Deere 7800 comes from the factory with 16.9R28 front tires.

What is the rear tire size of the John Deere 7800?

The John Deere 7800 comes from the factory with 20.8R38 rear tires.

Can I fit a different tire size on the John Deere 7800?

Equivalent sizes with a very close outside diameter can be fitted (e.g. the radial equivalent). On 4WD, a changed front/rear ratio can damage the driveline, so check it with the 4WD ratio tool first.

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