Tractor-Size › Ferguson › 399

Ferguson 399 tire size

Factory tire pairs for the Ferguson 399:

    Rear18.4-34Front7.50-18
    Rear18.4-34
    Outside dia.
    1,650mm
    Width
    467mm
    Rim
    34″
    radial equivalent: 460/85R34 (18.4R34)
    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: tractordata.com

    FAQ

    What is the front tire size of the Ferguson 399?

    The Ferguson 399 comes from the factory with 7.50-18 front tires.

    What is the rear tire size of the Ferguson 399?

    The Ferguson 399 comes from the factory with 18.4-34 rear tires.

    Can I fit a different tire size on the Ferguson 399?

    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.

    Other Ferguson models

    All makes

    ⚠️ Is this size wrong? Report it
    Was this useful?Can't find your model or size? Tell us and we'll add it →