Serving the Automotive Aftermarket
1150 Heritage Road, Burlington, Ontario, Canada, L7L 4X9
Phone 1-905-335-1533    1-888-311-3503    Fax 1-888-311-3504    Email


Types of Repairs & Repair Limits


  • Puncture Repair:  
    • An injury in the tread (crown) area only caused by a small, sharp object penetrating the innerliner of the tire.  
    • The injury can be a maximum of 1/4" (6mm) in passenger tires & 3/8" (10mm) on light and medium truck tires.  
    • (See next page for puncture repair procedures)
  • Spot Repair:
    • A rubber only repair that penetrates less than 25% of the body plies.  
    • An area to be spot repaired must not exhibit any cord damage except in the case of Bias-Ply tires, which may have up to 25% of the cord plies injured.
  • Reinforcement Repair:
    • An injury which penetrates between 25% and up to 75% of the body plies.  
    • A cord reinforced repair unit is required on the inner liner of the tire.
  • Section Repair:
    • An injury that penetrates 75% or more of the body plies and exceeds the puncture repair limits.  
    • (See following pages for section repair procedures)

Section Repair Limits for Radial Tires
 
Tire Size Crown Limits Sidewall Limits
Passenger:
P195R and smaller
1/2" (13mm) 3/8" (9mm) x 2" (50mm) or
3/4" (19mm) x 1 1/2" (38mm)
P205R and larger 3/4" (19mm) 3/8" (9mm) x 2 3/4" (70mm) or
3/4" (19mm) x 2" (50mm)
Light Truck: 1" (25mm) 3/8" (9mm) x 3 1/8" (80mm) or
1" (25mm) x 2" (50mm)
Truck:
8.25R - 14.00R
1-1/2" (38mm) 3/4" (19mm) x 5 1/8" (130mm) or
1 1/4" (32mm) x  4" (102mm)
1 1/2" (38mm) x 3 1/8" (80mm)

* Wider repairs must be shorter in length

Section Repair Limits for Bias-Ply Tires

Non-Repairable Areas

Highway Service Drive
Trailer Applications
Ply Rating Crown Sidewall
Up to 8 1" (25mm) 1" (25mm)
10 - 14 2" (51mm) 1" (25mm)   
16 - 20 2-1/2" (64mm) 1 1/4" (32mm)    
Highway Service Drive
Trailer Applications
Ply Rating Crown Sidewall
Up to 8 2" (51mm) 1 1/2" (38mm)
10 - 14 3" (76mm) 1 1/2" (38mm)   
16 - 20 3-1/2" (89mm) 1 3/4" (45mm) 
Non-Repairable Areas

Radial Tire Non-Repairable
(Measure from toe of bead down innerliner)

Passenger: 2-1/2" (64mm)
Light Truck: 2-1/4" (57mm)
Truck: 7.50 3-1/2" (89mm)
8.50 3-1/4" (83mm)
9.00 - 12.00 4" (102mm)

Bias-Ply Tire Non-Repairable
(Measure from toe of bead down innerliner)

Tire Size
7.00 -   8.75 3-1/4" (80mm)
 9.00 -  14.00 4"    (100mm)
16.00 - 18.00 5"    (125mm)
21.00 - 29.50 6"    (150mm)

Information on this page was reprinted with permission from the ITRA


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Phone 1-905-335-1533      1-888-311-3503       Fax 1-888-311-3504
1150 Heritage Road, Burlington, Ontario, Canada, L7L 4X9