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Kubota M8540 tire size

Factory tire pairs for the Kubota M8540 (85 HP, 2WD / 4WD):

  • 85 HP
  • 2WD / 4WD
Rear18.4-28Front7.50-18
2WD
Rear18.4-28
Outside dia.
≈1,506mm
Width
467mm
Rim
28″
Front7.50-18
Outside dia.
≈838mm
Width
191mm
Rim
18″
4WD
Rear18.4-28
Outside dia.
≈1,506mm
Width
467mm
Rim
28″
Front12.4-24
Outside dia.
1,160mm
Width
315mm
Rim
24″
radial equivalent: 320/85R24 (12.4R24)

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: Kubota M8540/M9540 spec föyü (bayi PDF)

FAQ

What is the front tire size of the Kubota M8540?

The Kubota M8540 comes from the factory with 7.50-18 or 12.4-24 front tires.

What is the rear tire size of the Kubota M8540?

The Kubota M8540 comes from the factory with 18.4-28 rear tires.

Can I fit a different tire size on the Kubota M8540?

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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