Tire Combinations Tables
Tire Combination Group Sizes
Minimum Recommended Row Width in Inches
20
22
26
30
32
40+
Tire Section Width
Group Size
320 mm (12.4 in.)
380 mm (14.9 in.)
420 mm (16.9 in.)
480 mm (18.4 in.)
520 mm (20.8 in.)
620 mm (24.5 in.)
710 mm (28 in.)
800 mm (30.5 in.)
900 mm (35.4 in.)
48
380/90R54
480/80R50
520/85R46
620/70R46
650/85R38
710/70R42
800/70R38
47
320/90R54
380/90R50
18.4R46
480/80R46
20.8R42 520/85R42
620/70R42
650/75R38
710/70R38
Front Tire Group Sizes
Minimum Recommended Row Width in Inches
20
22
26
30
32
40+
Tire Section Width
Group Size
290 mm (11.2 in.)
320 mm (12.4 in.)
380 mm (14.9 in.)
420 mm (16.9 in.)
480 mm (18.4 in.)
520 mm (20.8 in.)
620 mm (23.1 in.)
44
540/75R34
620/75R30
43
380/80R38
420/85R34
480/70R34
540/65R34
600/70R30
42
290/90R38
320/85R38
380/85R34
16.9R30
420/90R30
480/70R30
540/65R30
600/65R28
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