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Application Charts
Truck Tire Radial Patches
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HOW TO USE
THESE CHARTS. Please note that these charts are only a suggestion and
local driving conditions, etc. should be considered when making the proper
selection of Chemco radial patches.
Determine the
tire cross section corresponding to the injured tire. This will determine
the appropriate patch selection. The chart then provides information
outlining the maximum dimensions of the repairable injury. The maximum
length of a repair is determined by its corresponding width. As the width
of the injury increases, the maximum length decreases. The chart also
indicates the minimum distance a crown patch must extend beyond the
injury, or a sidewall patch must extend beyond the flex point of the
sidewall onto the tire crown. Please refer to the diagrams below.
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Crown Repairs |
Sidewall Repairs |
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The crown patch must not extend beyond the belt edge into the
sidewall flex region. However, it must extend beyond the edge
of the injury by the minimum distance (M). If not, a sidewall
patch must be used. |
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| Note:
The sidewall patch should extend from the bead to the center
of the crown area. It is recommended that the patch be placed
to end 3/8" to 1 ½” (9.5mm to 38mm) above the bead.
The sidewall patch must extend beyond the edge of the injury
by the minimum distance (M). On shoulder or lower sidewall
repairs, the patch must be placed to meet the minimum distance
(M). The maximum length of the repair is determined by its
corresponding width. As the width of an injury increases, the
maximum length decreases (please refer to the accompanying
size charts). |
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Crown Repairs |
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Crown Injury |
Tire Cross Section |
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Diameter c |
6.5-8.25 |
7.5-10.00 |
11.00-14.00 |
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Inch (mm) |
7-10 |
8-11 |
12-16.5 |
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1/8" (3) |
SFUX43 |
SFUX43 |
SFUX65 |
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1/4" (6) |
SFUX43 |
SFUX65 |
SFUX65 |
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3/8" (10) |
SFUX65 |
SFUX76 |
SFUX76 |
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3/4" (20) |
SFUX76 |
SFUX86 |
SFUX86 |
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11/2" (38) |
SFUX86 |
SFUX106 |
SFUX106 |
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21/2" (65) |
SFUX106 |
SFUX108 |
SFUX108 |
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31/2" (90) |
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SFUX108 |
SFUX1210 |
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Min. Distance M Inch (mm) |
21/2" (65) |
3" (75) |
4" (100) |
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Sidewall Repairs |
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Shoulder |
Sidewall |
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Tire Cross Section |
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Injury |
Injury |
6.5-8.25 |
7.5-10.00 |
11.00-14.00 |
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Diameter c |
W |
L |
7-10 |
8-11 |
12-16.5 |
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Inch (mm) |
Inch (mm) |
Inch (mm) |
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3/8" (10) |
11/2" (40) |
SFUX63 |
SFUX74 |
SFUX84 |
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3/8" (10) |
23/8" (60) |
SFUX74 |
SFUX84 |
SFUX94 |
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3/8" (10) |
31/8" (80) |
SFUX84 |
SFUX94 |
SFUX105 |
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3/8" (10) |
51/8" (130) |
SFUX94 |
SFUX105 |
SFUX125 |
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3/8" (10) |
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SFUX105 |
SFUX105 |
SFUX125 |
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1/2" (12) |
11/2" (40) |
SFUX105 |
SFUX125 |
SFUX155 |
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1/2" (12 |
23/4" (70) |
SFUX105 |
SFUX125 |
SFUX155 |
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1/2" (12 |
33/4" (95) |
SFUX105 |
SFUX125 |
SFUX155 |
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1/2" (12) |
51/8 (130) |
SFUX125 |
SFUX125 |
SFUX155 |
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1/2" (12) |
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SFUX105 |
SFUX125 |
SFUX155 |
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3/4" (20) |
1" (25) |
SFUX125 |
SFUX155 |
SFUX157 |
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3/4" (20) |
21/2" (65) |
SFUX125 |
SFUX155 |
SFUX157 |
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3/4" (20) |
43/8" (111) |
SFUX125 |
SFUX155 |
SFUX157 |
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3/4" (20) |
51/8" (130) |
SFUX125 |
SFUX155 |
SFUX157 |
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3/4" (20) |
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SFUX125 |
SFUX155 |
SFUX157 |
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1" (25) |
2" (50) |
SFUX125 |
SFUX155 |
SFUX157 |
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1" (25) |
31/4" (83) |
SFUX125 |
SFUX155 |
SFUX157 |
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1" (25) |
4" (100) |
SFUX155 |
SFUX157 |
SFUX159 |
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1" (25) |
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SFUX125 |
SFUX155 |
SFUX157 |
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11/2" (40) |
2" (50) |
SFUX157 |
SFUX159 |
SFUX175 |
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11/2" (40) |
3" (75) |
SFUX157 |
SFUX159 |
SFUX175 |
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11/2" (38) |
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SFUX157 |
SFUX159 |
SFUX175 |
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2" (50) |
3" (75) |
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SFUX238 |
SFUX238 |
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2" (50) |
7" (178) |
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SFUX269 |
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2" (50) |
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SFUX238 |
SFUX238 |
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Minimum Distance M Inch (mm) |
2" (50) |
31/2" (90) |
4" (100) |
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Non Repair Area T-B
Inch (mm) |
21/2" (65) |
3" (75) |
4" (100) |
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W = Width of injury across radial cables |
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c = Maximum Diameter of injury in the belt plies
or in shoulder |
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TB = Non repairable area |
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M = Minimum distance of injury edge to patch
edge |
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How to use above charts |
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This information is to be read with the diagram on page 7 of
Superflex catalogue. |
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1. Please note that the above charts are only a suggestion and local
driving conditions, etc should be considered when making the proper
selection of Chemco
radial patches. Determine the cross section of the injured
tire in order to read off the patch selection. The length of a
repair is determined by its corresponding width. As the width
increases, the length decreases. This chart also provides
information outlining the maximum dimensions of a repairable injury. |
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2. In a conventional sectional repair, select a repair unit
depending on whether the injury is on crown or |
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sidewall for each tire cross section. Patches must be positioned to
end in the non-flexing areas. Crown sidewall for each tire cross
section. Patches must be positioned to end in the non-flexing areas.
Crown beyond the edge of the injury by the minimum distance
M. If this is not
possible, a sidewall patch |
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patches must not extend beyond the belt edge into the sidewall flex
region. However, it must extend |
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beyond the edge of the injury by the minimum distance
M. If this is not
possible, a sidewall patch must be used. The sidewall patch
should extend from the bead to the center of the crown area. It
is recommended that the patch be placed to end 3/8" to 11/2" (10mm
to 38mm) above the bead. The sidewall patch must extend beyond the
edge of the injury by minimum distance M.
In a Shoulder or lower sidewall repair, the patch must be
placed to meet the minimum distance M. |
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