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John Deere 990 tire size

Factory tire pairs for the John Deere 990 (40 HP, ?):

  • 40 HP
Rear14.9-24Front6.5-16
Rear14.9-24
Outside dia.
1,265mm
Width
378mm
Rim
24″
radial equivalent: 380/85R24 (14.9R24)
Front6.5-16
Outside dia.
≈687mm
Width
165mm
Rim
16″

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: machinerylink.com

FAQ

What is the front tire size of the John Deere 990?

The John Deere 990 comes from the factory with 6.5-16 front tires.

What is the rear tire size of the John Deere 990?

The John Deere 990 comes from the factory with 14.9-24 rear tires.

Can I fit a different tire size on the John Deere 990?

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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