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Fiat 55R tire size

Factory tire pairs for the Fiat 55R (55 HP, 2WD):

  • 55 HP
  • 2WD
Rear16.9/14-34Front7.50-18
2WD
Rear16.9/14-34
Outside dia.
1,585mm
Width
429mm
Rim
34″
radial equivalent: 420/85R34 (16.9R34)
Front7.50-18
Outside dia.
≈838mm
Width
191mm
Rim
18″

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: agridaten.de

FAQ

What is the front tire size of the Fiat 55R?

The Fiat 55R comes from the factory with 7.50-18 front tires.

What is the rear tire size of the Fiat 55R?

The Fiat 55R comes from the factory with 16.9/14-34 rear tires.

Can I fit a different tire size on the Fiat 55R?

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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