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Fiat 90-90 tire size

Factory tire pairs for the Fiat 90-90 (90 HP, 2WD / 4WD):

  • 90 HP
  • 2WD / 4WD
Rear16.9-34Front7.50-20
2WD
Rear16.9-34
Outside dia.
1,585mm
Width
429mm
Rim
34″
radial equivalent: 420/85R34 (16.9R34)
Front7.50-20
Outside dia.
915mm
Width
214mm
Rim
20″
2WD
Rear16.9-34
Outside dia.
1,585mm
Width
429mm
Rim
34″
radial equivalent: 420/85R34 (16.9R34)
Front7.50-18
Outside dia.
≈838mm
Width
191mm
Rim
18″
4WD
Rear16.9-34
Outside dia.
1,585mm
Width
429mm
Rim
34″
radial equivalent: 420/85R34 (16.9R34)
Front13.6-24
Outside dia.
1,200mm
Width
345mm
Rim
24″
radial equivalent: 340/85R24 (13.6R24)
4WD
Rear16.9-34
Outside dia.
1,585mm
Width
429mm
Rim
34″
radial equivalent: 420/85R34 (16.9R34)
Front11.2-28
Outside dia.
1,205mm
Width
284mm
Rim
28″
radial equivalent: 280/85R28 (11.2R28)

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 9090 · Fiat 90 90

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

4WD ratio check and other tools →

Source: tractordata.com (ikincil)

FAQ

What is the front tire size of the Fiat 90-90?

The Fiat 90-90 comes from the factory with 7.50-20 or 7.50-18 or 13.6-24 or 11.2-28 front tires.

What is the rear tire size of the Fiat 90-90?

The Fiat 90-90 comes from the factory with 16.9-34 rear tires.

Can I fit a different tire size on the Fiat 90-90?

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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