- BIS Certification is the standard that a Pneumatic tyres for passenger car has to meet in order to be considered compliant with IS 15633.
- The standard covers the safety and the endurance of the road through tests for both the diagonal and the radial ply tires.
- It is a comprehensive package which includes the testing of samples, the examination of the production plant, and the renewal of the license.
- Halts risks of brand trust erosion and violation of legal requirements.
- Real-world advantages illustrated through such brands as Apollo Tyres and MRF.
Introduction
A radial tyre shipment for passenger cars had been imported by a dealership in Mumbai. They were unfortunately held up due to unplanned customs delays for a couple of days. Their shipment lacked a BIS Certification under IS 15633, which is the main reason at the core of it all, and is the most important factor for both diagonal and radial ply pneumatic tyres in India. Besides the money that they lost, their reputation with their clients got jeopardized. BIS Certification for Automotive vehicles-Pneumatic tyres for passenger car vehicles–Diagonal and radial ply under IS 15633 is definitely more than just a legal obligation.
What is BIS Certification for Pneumatic tyres for passenger car vehicles– Diagonal and radial ply

BIS Certification for Pneumatic Tyres for Passenger Car Vehicles – Diagonal and Radial Ply is a definite and compulsory quality/safety certification performed by the Bureau of Indian Standards (BIS) and governed by the IS 15633 standard. The certification assures the consumers that the tyres available in the Indian market have passed the parameters set for their performance, durability, and safety.
Key points include:
- Scope of Certification: Indicative of the range of air-filled (pneumatic) tyres for passenger cars are the inclusion of both diagonal (cross-ply) and radial ply constructions.
- Safety Compliance: The physical, mechanical and endurance characteristics of the tread, as well as the strength and integrity of the sidewalls, the ability to carry a specified load, and resistance to blowouts, are confirmed.
- Performance Testing: Besides traction, the tires wear resistance is measured. The testing is done under Indian road conditions to determine the behavior of the tires.
- Quality Assurance: The oxygen content, the ply directions, and production uniformity were checked as a means of confirming that no defects were present.
- Regulatory Requirement: In the absence of certification, the tires that do not have a certificate cannot be sold or even imported into India legally. Certification is a token that can be produced at various instances like customs clearance for hassle-free clearance of the consignment without the delays/penalty/liability issues.
What is IS 15633?

IS 15633 is an Indian standard that defines the product and technical requirements of pneumatic car tyres. It covers the aspects related to the types of tires made of both diagonal (cross-ply) and radial ply. The standard is produced by the Bureau of Indian Standards (BIS), and it is the reference document for the BIS certification in India. ISI MARK
Key aspects of IS 15633 include:
- Scope: The document describes the technical standard of the components for pneumatic tires for passenger cars. These include size, ply structure, and load rating.
- Safety Standards: The standard enumerates the requirements for tread wear, sidewall strength, endurance of the tire at a certain pressure, and resistance to blowouts.
- Material Requirements: The standard sets chemical composition and tensile strength requirements for the various types of the carrying materials of the tyre products of the standard.
- Testing Procedures: The document specifies the performance tests to be carried out such as endurance testing, high-speed testing, and uniformity checks to verify the reliability of the tire in real traffic conditions in India.
- Compliance: Tires made or brought into India have to meet the requirements of IS 15633 to be certified by the BIS, which is the pre-condition to be marked by the BIS Standard Mark.
Why BIS Certification is Mandatory for Pneumatic tyres for passenger car vehicles– Diagonal and radial ply
- Legal Requirement – Only pneumatic passenger car tyres conforming to IS 15633 are allowed to be sold or imported in India. Non-compliance of such can lead to fines, seizure, or restrictions of the business.
- Safety Assurance – Certification is an account of the different tests on the tread wear, sidewall strength, ply integrity, and pressure resistance, thus it can never result in a blowout, slip, or failure of a tire.
- Consumer Protection – This system is the guarantee of the quality being at the same level for all the brands which gives buyers the confidence that they are not going to get low-quality or counterfeit tyres and in return, they will claim their warranties only to a lesser extent.
- Quality Standardization – It is a confirmation of the tires having the same materials, structure, and performance with tests done on both cross-ply and radial tires under Indian road conditions.
- Market Credibility & Liability Reduction – Such programs like Apollo Tyres and MRF are the source of a competitive advantage, the reduction of legal risks, and the preservation of their good name in case of tyre-related incidents.
Key features of BIS Certification
- Provides safety with aspects such as the tread, sidewall, and ply integrity.
- Assures the quality and good performance of the tyres.
- Are required by law for products to be sold and imported in India.
- Comes with stringent tests as per IS 15633.
- Enhances the confidence of consumers in the brand and the brand’s reputation.

Step by Step process of BIS Certification for Pneumatic tyres for passenger car vehicles– Diagonal and radial ply
Step1: Application Submission
- Filing of Form-I with BIS along with the technical specifications, the drawing, and the test report of the tyre.
Step2: Product Testing
Testing of the tyre is done at labs accredited by BIS for compliance with IS 15633 that covers:
- Wear of the tread
- Strength of the side wall
- The integrity of the ply
- Load and pressure endurance
Step3: Factory Inspection
Reviewing of production, quality control, and documentation of the factory by BIS inspectors to confirm the production of the factory is consistent.
Step4: Grant of Certification
On a successful testing and inspection, a license for the Standard Mark use on the tyre is granted by BIS, which allows the product to be sold in India legally.
Step5: Surveillance and Renewal
Annually certification renewal is necessary with factory inspections being held intermittently for the continuation of the compliance and tyre quality guarantee.
Importance of BIS Certification
- Legal Compliance – This certification ensures that the tyres meet the IS 15633 standards and therefore, can be sold or imported in India legally.
- Safety Assurance – It is through the verification of the tread, sidewall, and ply that the consumers are ensured that they are not exposed to the risk of a sudden tire blowout and consequently, accidents.
- Quality Standardization – This standard sets the basis for the use of the same materials, manufacturing process, and performance in all the tires.
Benefits of BIS Certification
- Consumer Confidence – Having the BIS mark is a sign of trust and it motivates the buyers to make a purchase of your tires.
- Reduced Liability – This will lower the chances of being subjected to legal penalties, recalls, and incidents caused by substandard tyres.
- Market Credibility – It is the brand image that gets strengthened thus, the manufacturers and the dealerships will be acquiring the competitive advantage.
- Operational Efficiency – It helps to facilitate the customs clearance process for imports and also ensures smooth market access.
- Long-term Savings – It frees the company from the pressure of the warranty claims, product returns, and loss of brand value caused by tame and risky products.
Timelines, Costs, Validity & Renewal
| Aspect | Details |
| Timelines | 6–12 weeks for testing, inspection, and approval |
| Costs | Application fee, lab testing charges, license fee; higher for imports |
| Validity | 1 year from date of issue |
| Renewal | Annual submission and periodic factory inspection to maintain compliance |
Why choose Diligence Certification
- Expertise in BIS Compliance – Diligence Certification is well versed in BIS Certification particularly in the case of the automotive industry the tires which are the most technology-intensive sector of the vehicular industry, the company is well versed for both the diagonal and radial ply under IS 15633.
- End-to-End Support- Diligence not only handles the processing of documents but also takes care of laboratory coordination and factory inspections thereby managing the entire process of certification and at the same time, it saves the client’s time and makes the process less prone to errors.
- Faster Approvals – Their efficient processes which are in line with the latest regulations and standards allow their clients to be free of delays both in the time of customs and that of market entry which in turn ensures that tyres reach the end-users without any unnecessary waiting time.
- Trusted by Brands – Car tyre manufacturers and importers have placed their trust in the hands of Diligence thereby enjoying the good compliance status and trouble-free certification that comes with it.
- Ongoing Guidance – In addition to that, Diligence stays connected to its clients through the provision of renewal support, the carrying out of surveillance audits, and the giving of compliance updates which all lead to continuous adherence to BIS standards.
Conclusion
BIS certification for automotive vehicles-Pneumatic tyres for passenger car vehicles-Diagonal and radial ply under IS 15633 is a standard that guarantees safety, quality, and conformity with regulations. It is a safety net for users, helps in creating trust among consumers, and increases the reputation of the brand in the market. The process is made easy and comfortable when you work with a professional such as Diligence Certification from the testing stage up to renewal. Bringing BIS certification on board to your business is a wise move that will keep you safe and be a source of dependable tyres that are fit for the road.
Frequently Ask Questions
What is BIS Certification for passenger car tyres?
BIS Certification is a kind of safety net that the Indian Bureau of standards has confirmed a product of two types of morphological (ply) tires (diagonal and radial) has met the quality and safety standards of IS 15633 regulations.
Is BIS Certification mandatory for all passenger car tyres?
Indeed, every car tyre of a passenger vehicle either locally available or imported into India must have a BIS certification under IS 15633 standards.
What is IS 15633?
IS 15633 is a standard set by the Bureau of Indian Standards to describe the specification and basic requirements needed for the safety, long-life, and user satisfaction of the vehicular tires made of radial and diagonal ply.It is the standard set by India.
What is the difference between diagonal and radial ply tyres?
In the case of diagonal fabric (cross-ply) tyres, the fibres are placed in a diagonal manner, thereby contributing to the product's longer life. On the other hand, in the radial version, the fibres cross the direction of the movement at a 90° angle, thus, the tyre has better adhesion and the ride is more comfortable.
How long does the BIS certification process take?
Usually, the entire operation which includes conducting tests, inspecting, and approving takes from half a year to a quarter of a year.
How much does BIS Certification cost?
The costs include an application fee, lab testing, and license fees, which vary with the type of the tire and whether the production is local or the product is imported.
How long is BIS Certification valid?
BIS Certification is for a period of 12 months and the certificate holder may renew it once every year.
Can tyres without BIS Certification be sold in India?
No! The importing and trading of non-certified tyres are illegal and may result in the offender being fined, having his goods confiscated, and being penalized legally.
What are the benefits of BIS Certification?
In addition to providing safety, quality, and legal compliance, it also elevates consumer trust as well as brand reputation, and lowers the risk of being held liable and facing delays in the market.
Why choose Diligence Certification for BIS compliance?
Diligence Certification proves to be a complete partner in the journey of a certificate from the Bureau of Indian Standards as it offers a support package starting from document preparation to laboratory coordination, inspection, and renewal. Therefore getting a certificate from the BIS can be done faster and without risks by a company.
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