Medium Tire Tread Depth Conversion Chart

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 32 32nd
2/32 100% 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 97 3/32
4/32 80 82 83 85 86 87 88 88 89 89 90 90 91 91 92 92 92 93 93 4/32
5/32 70 73 75 77 79 80 81 82 83 84 85 86 86 87 88 88 88 89 90 5/32
6/32 60 64 67 69 71 73 75 76 78 79 80 81 82 83 83 84 85 85 87 6/32
7/32 50 55 58 62 64 67 69 71 72 74 75 76 77 78 79 80 81 81 83 7/32
8/32 40 45 50 54 57 60 63 65 67 68 70 71 73 74 75 76 77 78 80 8/32
9/32 30 36 42 46 50 53 56 59 61 63 65 67 68 70 71 72 73 74 77 9/32
10/32 20 27 33 38 43 47 50 53 56 58 60 62 64 65 67 68 69 70 73 10/32
11/32 10 18 25 31 36 40 44 47 50 53 55 57 59 61 63 64 65 67 70 11/32
12/32 0 9 17 23 29 33 38 41 44 47 50 52 54 57 58 60 62 63 67 12/32
13/32   0 8 15 21 27 33 35 39 42 45 45 50 52 54 56 58 59 63 13/32
14/32     0 8 14 20 25 29 33 37 40 43 45 48 50 52 54 56 60 14/32
15/32       0 7 13 19 24 28 32 35 38 41 43 46 48 50 52 57 15/32
16/32         0 6 13 18 22 26 30 33 36 39 42 44 46 48 53 16/32
17/32           0 6 12 17 21 25 29 32 35 38 40 42 44 50 17/32
18/32             0 6 11 16 20 24 27 30 33 36 39 41 47 18/32
19/32               0 6 11 15 19 23 26 29 32 35 37 43 19/32
20/32                 0 5 10 14 18 22 25 28 31 33 40 20/32
21/32                   0 5 10 14 17 21 24 27 30 37 21/32
22/32                     0 5 5 13 17 20 23 26 33 22/32
23/32                       0 9 9 13 16 19 22 30 23/32
24/32     SAFETY WARNING
Serious Injury May Result From:
 
    0 4 8 12 15 19 27 24/32
25/32           0 4 8 12 15 23 25/32
26/32    

Explosion of tire/Rim assembly due to improper mounting - use safety cage and clip on extension air hose. Only specially trained persons should mount tires.

Tire failure due to misapplication/improper inflation/oveloading - follow tire manufacturer's instructions. Check inflation pressure frequently with gauge.

A tire must always match the diameter requirements of the rim to which it is being mounted. For example, a 16 inch tire must always be mounted on a 16 inch rim. Also, when replacing the truck type radial tires, use only wheels approved for radial tires. 

        0 4 8 11 20 26/32
27/32               0 4 7 17 27/32
28/32                 0 4 13 28/32
29/32                   0 10 29/32
30/32                     7 30/32
31/32                     3 31/32
32/32                     0 32/32