Tire Thread Depth Conversion Table
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1TRUCK TIRE TREAD DEPTH CONVERSION TABLE
TO PERCENT OF WEAR:
Original Tire Tread Depths in 32nds
Remaining
Tread
32nd
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
32
37
38
39
40
41
32nd
2/32 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100%
100% 100% 100% 100% 100% 2/32
3/32 90
91
92
92
93
93
94
94
94
95
95
95
95
96
96
96
96
96
96
97
97
97
97
97
97
3/32
4/32 80
82
83
85
86
87
88
88
89
89
90
90
91
91
92
92
92
93
93
93
94
94
95
95
95
4/32
5/32 70
73
75
77
79
80
81
82
83
84
85
86
86
87
88
88
88
89
89
90
91
92
92
92
92
5/32
6/32 60
64
67
69
71
73
75
76
78
79
80
81
82
83
83
84
85
85
86
87
89
89
89
89
90
6/32
7/32 50
55
58
62
64
67
69
71
72
74
75
76
77
78
79
80
81
81
82
83
86
86
86
87
87
7/32
8/32 40
45
50
54
57
60
63
65
67
68
70
71
73
74
75
76
77
78
79
80
83
83
84
84
85
8/32
9/32 30
36
42
46
50
53
56
59
61
63
65
67
68
70
71
72
73
74
75
77
80
81
81
82
82
9/32
10/32 20
27
33
38
43
47
50
53
56
58
60
62
64
65
67
68
69
70
71
73
77
78
78
79
79
10/32
11/32 10
18
25
31
36
40
44
47
50
53
55
57
59
61
63
64
65
67
68
70
74
75
76
76
77
11/32
12/32
0
9
17
23
29
33
38
41
44
47
50
52
54
57
58
60
62
63
64
67
71
72
73
74
74
12/32
13/32
0
8
15
21
27
33
35
39
42
45
45
50
52
54
56
58
59
61
63
69
69
70
71
72
13/32
14/32
0
8
14
20
25
29
33
37
40
43
45
48
50
52
54
56
57
60
66
67
68
68
69
14/32
15/32
0
7
13
19
24
28
32
35
38
41
43
46
48
50
52
54
57
63
64
65
66
67
15/32
16/32
0
6
13
18
22
26
30
33
36
39
42
44
46
48
50
53
60
61
62
63
64
16/32
17/32
0
6
12
17
21
25
29
32
35
38
40
42
44
46
50
57
58
59
61
62
17/32
18/32
0
6
11
16
20
24
27
30
33
36
39
41
43
47
54
56
57
58
59
18/32
19/32
0
6
11
15
19
23
26
29
32
35
37
39
43
51
53
54
55
56
19/32
20/32
0
5
10
14
18
22
25
28
31
33
36
40
49
50
51
53
54
20/32
21/32
0
5
10
14
17
21
24
27
30
32
37
46
47
49
50
51
21/32
22/32
0
5
5
13
17
20
23
26
29
33
43
44
46
47
49
22/32
23/32
0
9
9
13
16
19
22
25
30
40
42
43
45
46
23/32
24/32
0
4
8
12
15
19
21
27
37
39
41
42
44
24/32
SAFETY WARNING
25/32
0
4
8
12
15
18
23
34
36
38
39
41
25/32
26/32
0
4
8
11
14
20
31
33
35
37
38
26/32
SERIOUS INJURY MAY RESULT FROM:
27/32
0
4
7
11
17
29
31
32
34
36
27/32
Explosion of tire/rim assembly due to
28/32
0
4
7
13
26
28
30
32
33
28/32
improper mounting—use safety cage and
clip on extension air hose. Only specially
29/32
0
4
10
23
25
27
29
31
29/32
trained persons should mount tires.
30/32
0
7
20
22
24
26
28
30/32
Tire failure due to misapplication/improper
31/32
3
17
19
22
24
26
31/32
inflation/overloading —follow tire
32/32
0
14
17
19
21
23
32/32
manufac turer’s instructions. Check
inflation pressure frequently with gauge.
33/32
11
14
16
18
21
33/32
34/32
A tire must always match the diameter
9
11
14
16
18
34/32
requirements of the rim to which it is
35/32
6
8
11
13
15
35/32
being mounted. For example, a 16-inch
36/32
3
6
8
11
13
36/32
tire must always be mounted on a 16-inch
rim. Also, when replacing the truck type
37/32
0
3
5
8
10
37/32
radial tires, use only wheels approved for
38/32
0
3
5
8
38/32
radial tires.
39/32
0
3
5
39/32
40/32
0
3
40/32
41/32
0
41/32
DEFINITION OF TERM “LOAD RANGE” AND LETTERS (A, B, C, ETC.) IN TIRE IDENTIFICATION
Load Range
Replaces Ply Rating
Load Range
Replaces Ply Rating
A
2
G
14
B
4
H
16
C
6
J
18
D
8
L
20
E
10
M
22
F
12
N
24
57
43
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