Tractor-SizeRadial ↔ bias-ply tire equivalents
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New Holland TD80D tire size

Factory tire pairs for the New Holland TD80D (72 HP, 2WD / 4WD):

2WD
Front
10.00-16outside dia. 895 mm
Rear
16.9-30outside dia. 1,485 mmradial equivalent: 420/85R30 (16.9R30)
2WD
Front
10.00-16outside dia. 895 mm
Rear
18.4R30outside dia. 1,544 mmtube-type equivalent: 18.4/15-30
4WD
Front
11.2R24outside dia. 1,086 mmtube-type equivalent: 11.2-24
Rear
16.9R30outside dia. 1,475 mmtube-type equivalent: 16.9/14-30
4WD
Front
12.4R24outside dia. 1,154 mmtube-type equivalent: 12.4/11-24
Rear
18.4R30outside dia. 1,544 mmtube-type equivalent: 18.4/15-30

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: tractordata.com (ikincil)

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