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Kubota M4-063 tire size

Factory tire pairs for the Kubota M4-063 (66 HP, 4WD):

  • 66 HP
  • 4WD
Rear420/85R30Front320/85R20
4WD
Rear420/85R30
Outside dia.
1,475mm
Width
420mm
Rim
30″
tube-type equivalent: 16.9/14-30
Front320/85R20
Outside dia.
1,052mm
Width
319mm
Rim
20″

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

Also written as: Kubota M4063 · Kubota M4 063

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

4WD ratio check and other tools →

Source: Kubota Europe M4003 broşürü (FR)

FAQ

What is the front tire size of the Kubota M4-063?

The Kubota M4-063 comes from the factory with 320/85R20 front tires.

What is the rear tire size of the Kubota M4-063?

The Kubota M4-063 comes from the factory with 420/85R30 rear tires.

Can I fit a different tire size on the Kubota M4-063?

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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