What is BS AU 159 tyre repair procedure?

Tyre Puncture Repairs in Surbiton

16/08/2011

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Can Your Surbiton Tyres Be Repaired? A Comprehensive Guide

It's a familiar, unwelcome sound: the hiss of escaping air, a stark reminder that your car's tyre has encountered a puncture. For many motorists, the immediate thought is replacement. However, in many cases, a professional tyre puncture repair is not only possible but also the preferred and more economical option. At Surbiton Tyre and Wheel, we are committed to offering our customers the best possible solutions, and that often means opting for a repair where it is safe and appropriate to do so. This article will delve into the specifics of tyre puncture repairs, focusing on the standards and procedures that ensure your safety on the road.

Where can I get a tyre & puncture repair?
Bring your car into one of our local centres for a tyre and puncture repair service at ATS Euromaster.

The Possibility of Tyre Puncture Repair

Surbiton Tyre and Wheel is pleased to offer car tyre puncture repairs where feasible. Our company policy prioritises offering customers the option of puncture repairs ahead of a complete tyre replacement. This not only benefits your wallet but also contributes to reducing waste and promoting sustainability. However, the ability to repair a tyre is not absolute; it depends critically on the location and nature of the damage.

Understanding the 'Minor Repair Area'

Tyre manufacturers and industry bodies have established guidelines to ensure the safety and longevity of repaired tyres. A crucial concept in this regard is the 'minor repair area'. At Surbiton Tyre and Wheel, we are equipped to carry out tyre puncture repairs to the central three-quarters (¾) of a tyre. This area is considered the most structurally sound part of the tyre, and repairs here are generally considered safe and effective. Importantly, this also includes repairs to runflat tyres, which often have more complex construction but can still be repaired within these limitations.

If a puncture is situated outside of this central area, particularly if it is too close to the tyre's sidewall, it is deemed too risky to guarantee a safe and lasting repair. The sidewall is a more flexible and critical component of the tyre, and damage or attempted repair in this zone can compromise its integrity, potentially leading to a catastrophic failure.

The Benchmark: British Standard BS AU 159

In the United Kingdom, tyre puncture repairs are governed by a crucial standard: British Standard BS AU 159. This standard, maintained by the British Tyre Manufacturers Association (BTMA), sets out the definitive guidelines for safe and effective tyre repairs. At Surbiton Tyre and Wheel, we adhere strictly to these recommendations. Before commencing any repair work, our trained fitters meticulously check that all procedures will be carried out in accordance with the prevailing issue of BS AU 159.

It is vital to understand that the BTMA only endorses repairs conducted according to BS AU 159. This commitment to standards ensures that any repair carried out by us meets the highest safety benchmarks. Consumers are always advised to confirm with their repairer that all work will be conducted in line with these essential guidelines.

Important Note: The insertion of a tube into a tubeless tyre is not considered a suitable alternative to a permanent repair under BS AU 159. While it might temporarily hold air, it does not address the underlying damage to the tyre's structure and is therefore not a recommended or compliant practice for a lasting solution.

What Constitutes Best Practice in Tyre Repair?

The British Standard is clear about the most effective method for tyre repair. Industry best practice dictates that a tyre repair should use a combination of a tyre repair patch and plug, often referred to as a 'combi repair' or 'mushroom repair'. This two-part system is considered superior because it seals the tyre not only through the tread but also seals the inner liner and the inner surface of the tyre casing at the point of penetration. This comprehensive sealing ensures the integrity of the tyre and provides a more durable and reliable repair.

The BS AU 159 Tyre Repair Procedure

The actual repair procedure approved by the British Standard Institution is specifically outlined in BS AU 159. This standard details the 'specification for repairs to tyres for motor vehicles used on the public highway'. The process generally involves:

  1. Inspection: A thorough internal and external inspection of the tyre to confirm the puncture is within the repairable area (the central ¾ of the tread) and that there is no sidewall damage, bead damage, or other structural compromise.
  2. Cleaning: The damaged area is thoroughly cleaned and prepared.
  3. Buffing: The inner surface around the puncture is buffed to create a suitable surface for the repair patch.
  4. Plug Insertion: A rubber stem (the plug) is inserted through the puncture from the inside.
  5. Patch Application: A reinforcing patch (the 'mushroom' head) is applied to the inner liner, covering the plug and the surrounding area.
  6. Curing: The repair materials are allowed to cure, bonding securely to the tyre.
  7. Final Inspection: A final check to ensure the repair is sound and the tyre is safe for use.

When Tyre Repairs Are Not Undertaken

At Surbiton Tyre and Wheel, safety is paramount. We will not undertake a tyre puncture repair if the tyre exhibits any of the following conditions:

  • Punctures outside the central ¾ of the tread area.
  • Damage to the tyre sidewall, including cuts, abrasions, or cracking.
  • Damage to the tyre bead, which is the part that seals against the wheel rim.
  • Evidence of under-inflation or running flat, which can cause internal structural damage not always visible externally.
  • Tyres that have been previously repaired using non-compliant methods or materials.
  • Tyres that have reached their legal tread depth limit or are otherwise unserviceable.
  • Runflat tyres with damage to the reinforced sidewall that prevents a safe repair.

Tyre Repairs vs. Tyre Replacement: Making the Right Choice

While repairs are often a viable and cost-effective solution, there are times when a tyre replacement is the only safe option. The decision is based on the factors mentioned above, primarily the location of the damage and the overall condition of the tyre. Our experienced technicians will always provide an honest assessment and recommend the course of action that best ensures your safety and the performance of your vehicle.

Consider the following table comparing repairs and replacements:

FeatureTyre RepairTyre Replacement
CostSignificantly lowerHigher
SpeedOften quicker, depending on procedureRequires fitting new tyre
SustainabilityMore environmentally friendlyLess sustainable, creates waste
ApplicabilityLimited to specific puncture locations and tyre typesAlways possible, regardless of damage
Safety GuaranteeHigh, when conducted to BS AU 159 standardsGuaranteed with a new tyre

Frequently Asked Questions About Tyre Repairs

Q1: How do I know if my tyre can be repaired?
Our expert technicians at Surbiton Tyre and Wheel will conduct a thorough inspection. Generally, punctures in the tread area, away from the sidewall, are repairable according to British Standard BS AU 159.

Q2: Is a repaired tyre as safe as a new tyre?
When a repair is carried out correctly according to BS AU 159 standards, a repaired tyre is considered safe for continued use. However, if the damage is too extensive or in the wrong location, a replacement is necessary for safety.

Q3: What is the difference between a plug and a patch repair?
A plug alone is a temporary fix. A combi-repair (mushroom repair) uses both a plug through the puncture hole and a patch on the inner liner, providing a permanent and compliant seal.

Q4: Can my runflat tyre be repaired?
Yes, runflat tyres can often be repaired, provided the puncture is within the acceptable tread area and the reinforced sidewall has not been compromised.

Q5: How long does a tyre repair take?
A professional tyre repair, following BS AU 159 guidelines, typically takes around 30-60 minutes, depending on the specific procedure and the technician's workflow.

Conclusion: Trust Surbiton Tyre and Wheel for Your Tyre Needs

When faced with a tyre puncture in Surbiton, remember that repair is often a safe, economical, and environmentally conscious choice. By adhering to the stringent guidelines of British Standard BS AU 159 and employing best practices like the combi-repair method, Surbiton Tyre and Wheel ensures that your vehicle remains safe on the road. Don't hesitate to visit us for an inspection and expert advice. We are dedicated to providing you with reliable tyre services that prioritise your safety and satisfaction.

If you want to read more articles similar to Tyre Puncture Repairs in Surbiton, you can visit the Repairs category.

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