To ensure optimum tyre safety, only tyres that suffer a penetration in the tread area and meet the below criteria are repairable.
Puncture occurs from belt edge to belt edge on tread area (green area shown in image below).
Puncture is no larger than 6mm (8mm for light truck and truck radial)
Tyre has not worn below 1.6mm of remaining tread depth
Tyre has no visible sign of under inflation or RunFlat damage
Maximum of 3 repairs with a minimum of 150mm between repairs (For RFT maximum of 2 repairs, minimum of 400mm apart).
NB: Penetration occurring in the side wall (red area shown in image below) cannot be repaired in store. Always follow the repair procedures provided by repair material supplier. Never use an inner tube as a substitute for a proper repair.
Cold vulcanisation repairs should not be carried out in the shoulder/sidewall areas due to the lack of casing reinforcement and the high flex that occurs in these areas. It is a legal requirement that all tyre repairs be completed to New Zealand Standard 5423 (or the equivalent British or Australian standard). I.e. the repair procedure and materials of a reputable tyre repair supplier are used.
