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Fiat 45-66S tire size

Factory tire pairs for the Fiat 45-66S (44 HP, 2WD / 4WD):

  • 44 HP
  • 2WD / 4WD
Rear380/70R28Front6.00-16
2WD
Rear380/70R28
Outside dia.
1,297mm
Width
380mm
Rim
28″
tube-type equivalent: 13.6/12-28
Front6.00-16
Outside dia.
735mm
Width
165mm
Rim
16″
4WD
Rear380/70R28
Outside dia.
1,297mm
Width
380mm
Rim
28″
tube-type equivalent: 13.6/12-28
Front300/70R20
Outside dia.
954mm
Width
290mm
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: Fiat 4566S · Fiat 45 66S

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 45-66S?

The Fiat 45-66S comes from the factory with 6.00-16 or 300/70R20 front tires.

What is the rear tire size of the Fiat 45-66S?

The Fiat 45-66S comes from the factory with 380/70R28 rear tires.

Can I fit a different tire size on the Fiat 45-66S?

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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