Tread Widths—Singles or Duals

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

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.

TREAD WIDTH—SINGLE WHEELS

 
 

Inner Tire Range

 

Tire Size

(Minimum—Maximum)

 
     

710/70R38

1782—2477 mm (70.2—97.5 in.)

 

710/70R42

1782—2477 mm (70.2—97.5 in.)

 

800/70R38

1876—2630 mm (73.9—103.5 in.)

 
 

TREAD WIDTH—DUAL WHEELS

 
 

Inner Tire Range

Outer Range

Tire Size

(Minimum—Maximum)

(Minimum—Maximum)

     

18.4R46 Cast/Steel

1530—1910 mm (60.0—75.2 in.)

2968—3348 mm (116.9—131.8 in.)

480/80R46 Cast/Steel

1530—1910 mm (60.0—75.2 in.)

2968—3348 mm (116.9—131.8 in.)

480/80R50 Cast/Steel

1530—1910 mm (60.0—75.2 in.)

2968—3348 mm (116.9—131.8 in.)

20.8R42 Cast/Steel

1600—2063 mm (63.0—81.2 in.)

2987—3450 mm (117.6—135.8 in.)

520/85R42 Cast/Steel

1600—2063 mm (63.0—81.2 in.)

2987—3450 mm (117.6—135.8 in.)

520/85R46 Cast/Steel

1600—2063 mm (63.0—81.2 in.)

2987—3450 mm (117.6—135.8 in.)

620/70R42 Cast/Steel

1689—2063 mm (66.5—81.2 in.)

3240—3615 mm (127.6—142.3 in.)

620/70R46 Cast/Steel

1689—2063 mm (66.5—81.2 in.)

3240—3615 mm (127.6—142.3 in.)

650/85R38 Cast/Steel

1722-1966 mm (67.8—77.4)

3372-3648 mm (140.2—143.6)

710/70R38 Cast/Steel

1782—1844 mm (70.2—72.6 in.)

3562—3624 mm (140.2—142.7 in.)

710/70R42 Cast/Steel

1782—1911 mm (70.2—75.2 in.)

3562—3691 mm (140.2—145.3 in.)

800/70R38 Cast/Steel

1876—2188 mm (73.9—86 in.)

3763—4077 mm (148—160.5 in.)

RW29387,00007AB-19-20101101