CENTRAL MARKS DEPARTMENT II (Legal) Our Ref: CMD-II(L)/16:

CENTRAL MARKS DEPARTMENT II (Legal) Our Ref: CMD-II(L)/16:15633 11 06 2015 Subject:Finalization and Implementation of revised STI DOC:STI/15633/4 March 2015 for Automotive vehicles - Pneumatic tyres for Passenger Car Vehicles- Diagonal and Radial ply as per IS 15633:2005 reg. This is with reference to certification of Automotive vehicles Pneumatic tyres for Passenger Car Vehicles- Diagonal and Radial ply as per IS 15633:2005 with STI DOC:STI/15633/3 February 2012 under BIS Product certification marks scheme. Based on the comments sent by CMD-FMCS on the frequency of testing for requirements specified under Cl. 4.1 and 4.5 of IS 15633:2005 and subsequent suggestions given by AHBO, the existing STI has been revised. The above STI has been revised & finalized by AHBO (Custodian BO) and approved by DDGW. Before finalizing the STI, the draft STI was circulated to all RO/BOs by AHBO vide mail dated 09 03 2015. A copy of the revised STI DOC: STI/15633/4 March 2015 is enclosed for ready reference for its implementation with immediate effect. All RO/BOs are requested to inform the licensees/applicants of IS 15633:2005 under their respective jurisdiction about the revision of existing STI and its compliance. This is issued with the approval of Competent Authority. Head, CMD-II (Legal) - -Sd/- -Sd/- (Sunil Kumar) Sc. F Circulated to : All ROs/BOs/SBOs/BIS Labs Copy to : Head AHBO (Custodian BO) : Head FMCS : Head TED ITS for hosting on BIS INTRANET& WEBSITE.

Doc: STI/15633/4 March 2015 SCHEME OF TESTING AND INSPECTION FOR CERTIFICATION OF AUTOMOTIVE VEHICLES- PNEUMATIC TYRES FOR PASSENGER CAR VEHICLES-DIAGONAL AND RADIAL PLY ACCORDING TO IS 15633:2005 1. LABORATORY - A laboratory shall be maintained which shall be suitably equipped and staffed where different tests given in the specification shall be carried out in accordance with the methods given in the specification. 2. TEST RECORDS - All records of tests, inspection and calibration shall be kept in suitable forms approved by the Bureau. 2.1 All the testing apparatus/measuring instruments shall be periodically checked and calibrated and records of such checks/ calibration shall be maintained. 2.2 Copies of any records and other connected papers that may be required by Bureau shall be made available at any time on request. 3. QUALITY CONTROL It is recommended that, as far as possible, Statistical Quality Control (SQC) methods may be used for controlling the quality of the product during production as envisaged in this Scheme [IS 397 (Part 1) to IS 397(Part -4)]. 3.1 In addition, efforts should be made to gradually introduce a Quality Management Systems in accordance with IS/ISO 9001. 4 STANDARD MARK- The Standard Mark as given in Column (l) of the First Schedule of the licence shall be embossed on each type, provided always that each tyre to which this mark is thus applied conforms to every requirement of the Specification. 4.1 OTHER MARKING- In addition, the information given in Annex 1 shall be marked on each tyre. 5 LEVELS OF CONTROL- The tests, as indicated in Table 1 and at the levels of control specified therein, shall be carried out on the whole production of the factory which is covered by this scheme and appropriate records and charts maintained in accordance with paragraph 2.0 above All the production which conforms to the Indian Standards and covered by the licence shall be marked with certification mark of the Bureau. 5.1 Only those finished product which meet all the requirements of the specification shall be considered fit to be covered under the BIS Certification Marks Scheme. Page 1 of 11

STI/15633/4,March 2015 5.2 RAW MATERIAL CONTROLS All the incoming raw materials shall be tested and proper records maintained before releasing material for production. Alternatively, the raw material shall be accompanied by the test certificate of the supplier. Recommended list of various raw materials is given in Annexure II. 5.3 PROCESS CONTROL The frequency of inspection and parameters shall be according to the approved plant quality audit programme. The areas of manufacturing given in Annex III shall be covered in this programme. During each stage, the given parameters and equipment set up shall be controlled, audited and recorded. 5.4 TYPE APPROVAL/TYPE TEST: For type approval/type test, the procedure stipulated under clause 6 and Table 19 of IS 15633 shall be followed for each family of Tyres before permission is granted for covering the tyres under BIS Certification Marks Scheme. The procedure as given in cl. 6.2.3 to 6.2.5 of IS 15633 shall be followed when there are changes in the technical specification of already approved tyres or for extension of type approval. 5.5 CONFORMITY OF PRODUCTION TEST/ACCEPTANCE TEST: During operation of licence, the procedure stipulated under Clause 7.1 to 7.4 and Table 20 of IS 15633 shall be followed for conformity of production test/acceptance test. 6.0 REJECTIONS A separate record shall be maintained giving information relating to the rejection of the production not conforming to the requirements of the specification and the method of its disposal. Such material shall in no circumstances be stored together with that conforming to the specification. 7.0 SAMPLES The licensee shall supply, free of charge, the samples required in accordance with the Bureau of Indian Standards (Certification) Regulations, 1988, as subsequently amended, from the factory or godowns. The Bureau shall pay for the samples taken by it from the open market. 8.0 REPLACEMENT Whenever a complaint is received soon after the goods with Standard Marks have been purchased and used, and if there is adequate evidence that the goods have not been misused, defective goods or their components are replaced or repaired free of cost by the licensee in case the complaint is proved to be genuine and the warranty period (where applicable) has not expired. The final authority to judge the conformity of the product to the Indian Standard shall be with the Bureau. The firm shall have own complaint investigation system as per IS/ISO 10002. 8.1 In the event of any damages caused by the goods bearing the Standard Mark, or claim being filed by the consumers against BIS Standard Mark and not conforming to the relevant Indian Standard, entire liability arising out of such non conforming product shall be of licensee and BIS shall not in any way be responsible in such cases. Page 2 of 11

STI/15633/4, March 2015 9.0 STOP MARKING The marking of the product shall be stopped under intimation to the Bureau if, at any time, there is some difficulty in maintaining the conformity of their product to the specification, or the testing equipment goes out of order. The marking may be resumed as soon as the defects are removed under intimation to Bureau. 9.1 The marking of the product shall be stopped immediately if directed to do so by Bureau for any reason. The marking may then be resumed only after permission by the Bureau. The information regarding resumption of markings shall also be sent to the Bureau. 10.0 PRODUCTION DATA The licensee shall send to BIS as per the enclosed proforma-1 to be authenticated by a Chartered Accountant statement of quantity produced, marked and exported by him and the trade value thereof at the end of each operative year of the licence. Table 1 Page3 of 11

Doc: STI/15633/4, March 2015 IS 15633:2005 AUTOMOTIVE VEHICLES PNEUMATIC TYRES For Passenger Car Vehicles (Diagonal and Radial Ply) TABLE 1 LEVELS OF CONTROL (Para 5 of Scheme of Testing and Inspection) TEST DETAILS LEVELS OF CONTROL Cl. Requirement Test Methods No. of Frequenc Remarks Clause Reference samples y 4.1 Tyre Dimensions Annex B& C Table 7 to 12 4.2 Load /Speed Performance test Annex D Table 13 4.3 Endurance Test Annex E Table 14 4.4 Bead Unseating Annex F Resistance Table 15 & Test for tubeless 16 tyres 4.5 Tread wear indicators 4.6 Tyre strength Test(Plunger Test) IS 15633 :2005 1 One in three months for each variety family/ range of tyres -do- 1 -do- -do- 1 -do- -do- 1 -do- 4.5.1 to 4.5.3 -do- 1 -do- Annex G Table 17 & 18 5 Marking 5 Annex H and J 6 Tyre approval /type test 6.1 to 6.2.5 Table 19 Annex K -do- 1 -do- -do- Each tyre -do- One Each family of tyre In case of failure in any requirement, the marking shall be suspended, reasons for failure investigated and corrective actions taken. Double the no. of samples indicated shall then be tested and marking & original frequency restored only, if both samples pass. 2. Samples may be drawn and tested as per clause 4.1, 4.2, 4.3, 4.4, 4.5 &4.6 in such a way that all varieties/ family/range of tyres manufactured are covered once in two years. At the time of initial approval or whenever there is any change in already approved family of tyres Note: Definition of Variety The tyre defined uniquely by tyre size designations, structure, speed category, load index, ply rating and category of use. For example 5.65-12, Bias-ply, 60 H, 4 PR, Normal & 5.65-12, Bias-ply, 60 H, 6 PR, Normal are two different varieties of tyres. Annexure -1 Page 4 of 11

STI/15633/4,March 2015 Annexure - I MARKINGS - (Cl.5 of IS 15633:2005) 5.1 Tyre shall be permanently and legibly marked on both the sides of their sidewalls in the case of symmetrical tyre and at least on the outer sidewall in the case of asymmetrical tyre shall bear following markings : a) Make (manufacturer s name) or trade name shall be placed at least on one side wall. b) Tyre size designation given in 3.17 c) An indication of the structure as follows : 1) On diagonal (bias-ply) tyres: no marking or character _, or the letter D placed in front of the rim-diameter marking 2) On radial-ply tyres: the letter R placed in front of the rim-diameter marking and, optionally, the word RADIAL 3) On bias belted tyres, the letter B placed in front of the rim-diameter marking, and in addition the word BIAS-BELTED 4) On radial ply tyres suitable for speeds higher than 240 km/h the letter R, placed in front of the rim diameter marking, may be replaced with ZR. d) The speed-category symbol (or symbols), i) An indication of the tyre s nominal speed category in the form of the symbol given in 3.28 ii) Tyres suitable for speeds in excess of 300 km/h must be marked with the service description (load index and speed symbol) corresponding to the performance up to 300 km/h. e) The inscription M+S or M.S or M&S in the case of snow tyre. f) The load index given in Annex A or maximum load carrying capacity and ply rating (if applicable). g) Maximum permissible tyre pressure in kpa or bar or kg/cm 2 or any combination of the units. h) The word TUBELESS if the tyre is designed for use without an inner tube, J) Manufacturer s Code (May be placed on one side wall) k) week and year code (code only in the form of 2504 which indicates 25 th week of year 2004) or month and year code of manufacturer (code only in the form of MAR 04 which indicates march month of year 2004); m) In the case of tyres which can be regrooved, symbol U at least 20 mm in diameter, or the work REGROOVABLE, moulded on the sidewall. 5.2 Example of Tyre size designation given in Annex H Page5 of 11

STI/15633/4,March 2015 5.3 Tread wear indicators marking shall be provided at minimum six/four (as applicable) places along the circumference to give indication to the user for location of tread wear indicator. 5.4 The markings given in 5.1 shall be moulded into or on the tyres. These shall be clearly legible and situated in the lower area of the tyre on at least one of its side walls, except for the inscription given in 5.1.The layout for tyre markings given in Annex J. ANNEXURE II.. Page 6 of 11

Annexure - II STI/15633/4, March 2015 RAW MATERIAL TEST (See Clause 5.2) Sl. No. Item Test 1. Natural rubber a) Visual inspection b) Moisture content c) Ash content d) Dirt content e) Viscosity 2. Synthetic rubber a) Moisture content b) Ash content c) Viscosity d) Compound testing 3. Lattices a) contents b) Viscosity c) TSC 4. Carbon black a) Moisture contents b) Ash content c) DBP value d) Iodine number e) Sieve residue 5. Activators a) Moisture content b) Sieve residue c) ASSAY d) Ash content e) HCL insoluble f) Acid number 6. Vulcanising agents a) Melting point b) Acetone insolubles c) Specific gravity d) Softening point e) Solubility Page 7 of 11

Sl. No. Item Test STI/15633/4 March 2015 7. Process oil a) Aniline point b) Viscosity c) Specific gravity 8. Tyre cord a) Warp sheets i) Breaking strength ii) Percentage elongation iii) Twist iv) Moisture content b) Nylon square woven fabric i) Strip and grab strength ii) Adhesion iii) EPI 9. Bead wire a) Breaking strength b) Percentage elongation c) Torsion d) Bend test e) Adhesion f) Copper coating 10. Solvent a) Specific gravity b) Distillation range Note : The list of raw materials to be tested and proper records maintained (See clause 5.2). The list is not exhaustive. ANNEXURE III. Page 8 of 11

STI/15633/4 March 2015 Area ANNEXURE III Parameters to be controlled 1 Compounding Ingredient weights. 2. Mixing Time/Temperature or Energy, Sequence 3. Dip Preparation Ingredient weights, time, temperature sequence 4. Dipping Temperature, stretch/tension, speed/time, width. 5. Extrusion Stock identification, temperature, width, dimensions. 6. Calendering Stock/fabric identification, temperature, width, gauge. 7. Bead making Stock/wire identification, diameters, No. of strands, No. of turns. 8. Stock preparation Stock identification, width, angle. 9. Tyre building Component identification,sequence. 10. Tyre curing Time, temperature/pressure, sequence. 11. Final Inspection : Every tyre shall be visually examined For defects and appearance. 12. In process Testing In process materials shall be Given below: a) COMPOUND Final batch Sp. Gravity Rapid Modulus Rheometer Test Physical Properties Page 9 of 11

STI/15633/4 March 2015 Area Parameters to be controlled b) DIP SOLUTION Final Total solids ph value c) DIPPED FABRIC Tyre Cord warp sheet Sq. woven nylon fabric Breaking strength % Elongation Adhesion & Dip pick up E.P.I. Strength Adhesion and dip pick up d) CALENDERED FABRIC Tyre cord warp sheet Sq. woven fabric E.P.I. Gauge Sq. metre weight Gauge Sq. metre weight Proforma 1 Page 10 of 11

PROFORMA 1 PROFORMA FOR OBTAINING PRODUCTION DETAILS STI/15633/4 March 2015 Period covered Name of Licensee CM/L No. Name of Articles (s) IS No. Grade/Type/Size/Variety/Class/Rating 1.1 Brand/Trade/Name(s) of BIS Certification Marked Products 2.0 Total production of the articles(s) Licensed for certification marking 2.1 Total production of the article(s) Conforming to Indian Standard 3.0 Production covered with BIS Certification Mark and its Value a) Quantity b) Value (Rs.) 3.1 Brand Name used on production covered under BIS Certification Mark 3.2 Calculation of marking fee on unit-rate basis; Marking Fee per unit a) Units b) Quantity covered with BIS Certification Mark c) Marking fee rounded off in whole rupees as obtained by applying unit rates given in (a) on quantity given in (b) Note: Incase a clause is not applicable, suitable remarks may be given against it. 4.0 Quantity not covered with BIS Certification Mark. If any, and the reasons for such noncoverage 4.1 Brand Name under with non certified goods were sold 5.0 Quantity Exported with BIS Standard Mark and its value 5.1 Brand Name under which BIS Certified goods are exported 6.0 Authentication by Chartered Accountant Page 11 of 11