Tractor-SizeRadial ↔ bias-ply tire equivalents
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Hattat C3085 tire size

Factory tire pairs for the Hattat C3085 (75 HP, 4WD):

4WD⚠ Suspicious size in source, to be verified
Front
280/70R20outside dia. 912 mm
Rear
14.9-28outside dia. 1,365 mmradial equivalent: 380/85R28 (14.9R28)
4WD⚠ Suspicious size in source, to be verified
Front
300/70R20outside dia. 954 mm
Rear
380/85R30outside dia. 1,404 mmtube-type equivalent: 14.9/13-30
4WD⚠ Suspicious size in source, to be verified
Front
280/70R18outside dia. 846 mm
Rear
340/85R28outside dia. 1,287 mmtube-type equivalent: 13.6/12-28
4WD⚠ Suspicious size in source, to be verified
Front
280/85R20outside dia. 989 mm
Rear
12.4-36outside dia. 1,465 mmradial equivalent: 320/85R36 (12.4R36)
4WD⚠ Suspicious size in source, to be verified
Front
300/70R20outside dia. 954 mm
Rear
14.9-30outside dia. 1,415 mmradial equivalent: 380/85R30 (14.9R30)

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: Hattat Traktör C3000 Stage 5 teknik föy (PDF)

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