Tire Combination Tables
Rear Tire Group Sizes
Minimum Recommended Row Width in Inches
508 mm (20 in.)
558.8 mm (22 in.)
660.4 mm (26 in.)
762 mm (30 in.)
812.8 mm (32 in.)
1016 mm+ (40 in. +)
Tire Selection 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
520/85R46
620/70R46
650/85R38
710/70R42
47
650/65R42
710/70R38
Front Tire Group Sizes
Minimum Recommended Row Width in Inches
20
22
26
30
32
40+
Tire Selection 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
420/85R34
480/70R34
540/65R34
600/70R30
42
16.9R30
480/70R30
540/65R30
600/65R28
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