Not every puncture means you need a new tyre. We explain the industry rules on when a safe repair is possible and when a full replacement is the only safe option.
Not every puncture means you need to buy a new tyre — but not every puncture can be safely repaired either. Knowing the industry rules on when a repair is acceptable and when replacement is the only safe option can save you money without compromising on safety.
1When a Repair is Acceptable
British Standard BSAU159 defines the conditions under which a tyre can be safely repaired. The puncture must be in the central three-quarters of the tread area, the hole must be no larger than 6mm in diameter, and the tyre must not have been driven on while flat. These three conditions must all be met.
2The Correct Repair Method
A safe repair involves removing the tyre completely from the rim, inspecting the inside surface for concealed structural damage, and installing a vulcanised combination patch-and-plug from inside the tyre. Externally applied plug-only repairs do not meet the British Standard and should not be accepted as permanent.
3When Replacement is Required
Punctures in the sidewall or shoulder of the tyre cannot be safely repaired — these areas flex during driving and any repair will eventually fail under the repeated stress. Any tyre that has been driven on while completely flat must also be replaced, as the internal structure may be compromised beyond safe use.
4Tyre Sealants — Emergency Use Only
Inflation sealants are useful for reaching safety after a puncture but do not constitute a permanent repair. The sealant coats the inside of the tyre and can make proper inspection and repair more difficult. Always have a sealant-treated tyre professionally assessed and either repaired or replaced promptly.
Bradford Mobile Tyres assesses every puncture individually and always recommends the safest and most cost-effective outcome. If a proper repair is possible, we carry it out on-site to British Standard specification.
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