Tread Widths—Singles or Duals

IMPORTANT: Use of clamp-on dual wheels is not allowed. A separate hub is required for each dual or triple tire.

NOTE: See Observing Tread Width Limitations in this section of this Operator’s Manual.

Approximate tread ranges for each tire size are shown in the following chart:

TREAD WIDTH—SINGLE WHEELS
Tire Size	Inner Tire Range Minimum - Maximum mm (in)
710/70R38	1782—2477 (70.2—97.5)
710/70R42	1782—2477 (70.2—97.5)
800/70R38	1876—2630 (73.9—103.5)

TREAD WIDTH—DUAL WHEELS
Tire Size	Inner Tire Range Minimum - Maximum mm (in)	Outer Tire Range Minimum - Maximum mm (in)
18.4R46 Cast/Steel	1530—1910 (60—75.2)	2968—3348 (116.9—131.8)
480/80R46 Cast/Steel	1530—1910 (60—75.2)	2968—3348 (116.9—131.8)
480/80R50 Cast/Steel	1530—1910 (60—75.2)	2968—3348 (116.9—131.8)
20.8R42 Cast/Steel	1600—2063 (63—81.2)	2987—3450 (117.6—135.8)
520/85R42 Cast/Steel	1600—2063 (63—81.2)	2987—3450 (117.6—135.8)
520/85R46 Cast/Steel	1600—2063 (63—81.2)	2987—3450 (117.6—135.8)
620/70R42 Cast/Steel	1689—2063 (66.5—81.2)	3240—3615 (127.6—142.3)
620/70R46 Cast/Steel	1689—2063 (66.5—81.2)	3240—3615 (127.6—142.3)
650/85R38 Cast/Steel	1722—1966 (67.8—77.4)	3372—3648 (140.2—143.6)
710/70R38 Cast/Steel	1782—1844 (70.2—72.6)	3562—3624 (140.2—142.7)
710/70R42 Cast/Steel	1782—1911 (70.2—75.2)	3562—3691 (140.2—145.3)
800/70R38 Cast/Steel	1876—2188 (73.9—86)	3763—4077 (148—160.5)