Application Chart
Standard (90 Degree) Bias Repair Unites


HOW TO USE THIS CHART. In order to select the appropriate repair unit, determine the size of the injury in the tire by measuring the largest cord area removed after skiving and buffing. Using this injury size, refer to the two left most columns in inches or millimetres. Locate the tire’s ply/rating along the top of the chart. The correct repair unit corresponds to the intersection of the injury size and the ply rating. For example, for a two inch injury in a tire with a ply/rating of 18, the correct repair unit would be an SFUN13/6 (a 13/6 on the following table -- a 13" patch with a ply/rating of 6).

Injury Size

Ply/Rating

mm

Inch

2

4

6

8

10

12

14

16

18

20

22

24

26

28

30

32

34

36

38

40

6

1/4"

6/4

6/4

6/4

7/4

7/4

7/4

8/4

8/4

8/4

8/4

10/4

10/4

10/4

12/6

12/6

12/6

12/6

13/6

13/6

13/6

12

1/2"

6/4

6/4

7/4

7/4

7/4

8/4

8/4

10/4

10/4

10/4

10/4

10/4

10/4

12/6

12/6

13/6

13/6

15/8

15/8

15/8

20

3/4"

7/4

7/4

7/4

7/4

8/4

8/4

10/4

10/4

12/6

12/6

12/6

12/6

12/6

12/6

13/6

13/6

13/6

15/8

17/8

17/8

25

1"

7/4

7/4

7/4

8/4

8/4

10/4

126

12/6

12/6

12/6

12/6

12/6

12/6

12/6

13/6

13/6

15/8

17/8

17/8

19/8

38

11/2"

8/4

8/4

8/4

8/4

8/4

10/4

12/6

12/6

12/6

12/6

13/6

13/6

13/6

13/6

15/8

15/8

15/8

17/8

19/8

22/10

50

2"

8/4

8/4

8/4

8/4

10/4

12/6

13/6

13/6

13/6

13/6

15/6

15/6

15/6

15/6

15/8

15/8

17/8

19/8

19/8

22/10

65

21/2"

 

10/4

10/4

10/4

12/4

12/6

13/6

13/6

15/6

15/6

15/6

15/6

15/6

15/6

17/8

17/8

17/8

22/10

22/10

24/12

75

3"

 

 

12/4

12/4

12/6

12/6

13/6

15/6

15/8

15/8

15/8

15/8

17/8

17/8

17/8

17/8

19/8

22/10

22/10

24/12

90

31/2"

 

 

 

13/6

13/6

13/6

15/6

15/6

15/8

15/8

15/8

17/8

17/8

19/8

19/8

19/8

19/8

24/12

24/12

26/14

100

4"

 

 

 

 

15/6

15/6

15/8

15/8

15/8

17/8

17/8

19/8

19/8

22/10

22/10

22/10

24/12

24/12

24/12

26/14

125

5"

 

 

 

 

 

17/8

17/8

17/8

17/8

19/8

19/8

22/10

22/10

22/10

24/12

24/12

26/14

26/14

26/14

28/16

150

6"

 

 

 

 

 

 

19/8

19/8

19/8

22/10

22/10

24/12

24/12

24/12

24/12

26/14

26/14

26/14

26/14

28/16

178

7"

 

 

 

 

 

 

 

22/10

22/10

22/10

24/12

24/12

24/12

24/12

26/14

28/16

28/16

28/16

28/16

30/18

200

8"

 

 

 

 

 

 

 

 

24/12

24/12

26/14

26/14

28/16

28/16

28/16

30/18

30/18

30/18

30/18

30/18

 
 
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