KUMHO TIRE AS POLICY - PowerPoint PPT Presentation

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KUMHO TIRE AS POLICY

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  1. KUMHO TIRE AS POLICY

  2. 1. KUMHO A/S Strategy 1. KUMHO A/S Strategy Customer Satisfaction Total Service C/M OE Biz. Kumho Dealer KUMHO TIRE Biz. Contract OE A/S Network Real-time response Customer Complaint

  3. 2. Warranty Coverage 2. Warranty Coverage Kumho Tires are warranted against defects in materials or workmanshipin normal use on the vehicle for the life of the original usable tread. The life of original usable tread shall be ended when the 1.6mm (2/32ndsof an inch) of tread remain. ◈ Non adjustable condition - Road hazards such as punctures, cuts, scuffs or impact breaks. - Improper inflation, overloading, improper mounting or demounting. - Run flat, irregular wear due to misalignment. - Tire worn beyond treadwear indicator. - Ride disturbance caused by misalignment, damaged wheel or wheel imbalance.

  4. 3. KUMHO Compensation Policy 3. KUMHO Compensation Policy A. Free Replacement If a KUMHO tire fails as a result of workmanship or material defect during the first 25% wear rate compared to original tread depth for passenger radial tire, and the first 10% wear rate compared to original tread depth for the other tires, free replacement will be applied.

  5. 3. KUMHO Compensation Policy B. Pro-rated Replacement If a KUMHO tire fails as a result of workmanship or material defect over 25% wear rate compared to the original usable tread depth for passenger radial tire and the first 10% wear rate compared to original tread depth for the other tires, pro-rated replacement will be applied. Namely, the claim adjustment will be done in proportion of the remaining usable tread depth.(R.T.D.-T.W.I.) Compensation amount = P x x (1 + rate of tax & expenses) (O.T.D.-T.W.I.)

  6. 3. KUMHO Compensation Policy C. Ride Complaint IfKUMHO tire fails due to the out of balance tire, the out of round tire within 10% wear rate of the original casing life, free replacement will be applied. Whereas, KUMHO can not guarantee the claim tire which is the out of balance tire, the out of round tire over 10% wear rate of the original casing life.

  7. CLAIM TIRE INSPECTION

  8. CONTENTS 1.Tire Inspection Procedure 2.Tire Claim : Problem Conditions & Causes - PC & LT Tires - TB & Others Claim

  9. 1.Tire Inspection Procedure A. Confirm the brand name : KH, MS, RC B. Check the tire Size / Pattern / Ply Rating C. Check the DOT No. or Serial No.(for TB) D. Measure the Remaining Tread Depth(RTD) E. Check the tire condition (Tread wear condition, Any damage or evidence for repairing, etc.) : Tread -> Sidewall -> Bead -> Inside F. Inspect the damaged parts. G. Explain the condition & the cause of damage to the customer.

  10. 1.Tire Inspection Procedure- Measuring the R.T.D. A. Measuring Method ①The most worn out point R.T.D.(mm) = ①+ ②+ ③ / 3 ③ ②

  11. 1.Tire Inspection Procedure - Measuring the R.T.D. B. Where to Measure

  12. 1.Tire Inspection Procedure - Measuring the R.T.D. B. Where to Measure

  13. 1.Tire Inspection Procedure - Measuring the R.T.D. B. Where to Measure

  14. 2.Tire Claim : Problem Conditions & Causes • PC & LT Tires • B. TB & Others Claim • - Bead Area • - Sidewall Area • - Tread Area • - Others

  15. PC & LT Tires- Sidewall Indentation Appearance An indentation on the sidewall of a radial tire Photos

  16. Sidewall Indentation Probable Causes - Originated by the joint overlap of cord sheet during the manufacturing process. - It cause the difference of the expansion between the section of overlapping and non overlapping. Preventions - The indentation is a common characteristic of radial tires and will not affect the performance or the safety of the tire. So,try to explain to the customer.

  17. PC & LT Tires - Cord Break Up (CBU) Appearance A bulge on the sidewall of a radial tire Photos

  18. Cord Break Up (CBU) ※ Probable Causes - Sidewalk

  19. Cord Break Up (CBU) ※ Probable Causes - A puddle or hole on the road

  20. Cord Break Up (CBU) ※ Appearance of damage 1. In a short time, we can find a bulge in the part which got impact 2. Also, most of cases, we can find the mark of cord breakage in the inside of the part

  21. Cord Break Up (CBU) Probable Causes - The breakage of the body ply cords due to impact from the outside.(sidewalk / puddle / hole etc.) Preventions - Maintain proper air pressure - Avoid high-speed driving. - When a vehicle pass the obstacles,reduce the speed.

  22. PC & LT Tires- Spread/Missed Cord (Bulge) Radial, pencil shaped bulge on the sidewall of a radial tire Appearance Photos Cord Cord Missing

  23. Spread/Missed Cord (Bulge) Probable Causes • Wider than normal carcass wire spacing. • Improper joint splicing during manufacturing process Preventions - Consult with Kumho Eng’r

  24. Spread/Missed Cord (Bulge) ◈ The difference of Bulge and Cord Break-up

  25. PC & LT Tires- Flat Spot Localized flat aspect on the tire tread area which was contacted on the ground Appearance Photos

  26. Flat Spot Probable Causes - Shipping or storaging condition for a long time. - Aggravated by low inflation pressure. - Park the vehicle for a long time without changing the position. Preventions - Avoid to park the vehicle for a long time. - Maintain high pressure for storage the vehicles. - Change the contacted position regularly.

  27. PC & LT Tires - Belt Separation A bulge or split through the upper shoulder & tread area Appearance Photos

  28. Belt Separation Probable Causes - Loose or separated steel wires due to low air pressure and/or high speed driving. - Adhesion loss within the tire at the edge of the belt. - May be associated with a penetration or other damage. Preventions - Maintain proper inflation pressure. - Avoid overloading and overspeed driving. - Consult with Kumho engineer.

  29. PC & LT Tires- Tread&Shoulder Separation(Bias) A bulge or split through the tread and shoulder area of a bias tire Appearance Photos

  30. Tread & Shoulder Separation(Bias Tire) Probable Causes - It is mainly due to underinflation. - The cause is overheating of the tire due to underinflation, which weakens the adhesive between the cord and the rubber layer. Preventions - Maintain proper air pressure and avoid overloading. - Avoid overspeed driving and sharp cornering.

  31. PC & LT Tires- Ply Turn-up Separation Circum cracks above the rim line area with cord exposed Appearance Photos

  32. Ply Turn-up Separation Probable Causes - Improper bead seating,improper rim size,overloaded or underinflated condition or possible manufacturing condition. Preventions - Ensure proper rim size - Maintain proper air pressure and avoid overloading.

  33. PC & LT Tires –Torn Beads Appearance Bead toe rubber is torn or cut Photos

  34. Torn Beads Probable Causes - Poor mounting/demounting techniques with tire tools and/or lubrication, forklift damage and poor tire handling procedures Preventions • Review mounting/demounting procedures and tire tools. • Ensure the tire beads are well lubricated. • Also check new tire handling procedures.

  35. PC & LT Tires –Distorted Bead Appearance Local areas of distortion in the bead Photos

  36. Distorted Bead Probable Causes • Improper use of tools, or incorrect techniques used • when mounting the tire. • - Improper or defective rim(bent or rusty rims) • Shipping/handling damage. Preventions • Review mounting/demounting procedures and tire tools. • Use proper rim and ensure the tire beads are lubricated. • Also check new tire handling procedures.

  37. TB Tires – Bead Area - Bead Deform & Burst Circumferencial deformation and/or burst of the bead area Appearance Photos

  38. Bead Area - Bead Deformation & Burst Probable Causes • Rusty rims, improper bead lubrication, and bent or damaged • rims which result in improper bead seating. • Excessive heat in the bead area. Preventions • Review mounting/demounting procedures and the use of • tire tools • - Ensure the tire’s beads are well lubricated.

  39. TB Tires – Bead Area-Turn-up & Chafer Sepa. Circumferencial cracks above the rim line area with cords exposed Appearance Photos

  40. Bead Area- Turn-up & Chafer Separation Probable Causes - Improper bead seating,improper rim size,overloaded or underinflated condition, impact or possible manufacturing condition. Preventions - Ensure proper rim size, mounting procedures, loading condition and inflation pressures are utilized.

  41. TB Tires – Bead Area- Flow Crack Circum cracks above the rim line area without cord exposed Appearance Photos Crack

  42. Bead Area - Flow Crack Probable Causes • Improper rubber flow during the manufacturing process. • Aggravated by overloaded or underinflated condition. Preventions • Ensure proper inflation pressure and loading condition. • - Consult with Kumho Engineer

  43. TB Tires – Side Area - Carcass Separation Separation between belt & carcass cords in tire shoulder area Appearance Photos

  44. Side Area - Carcass Separation Probable Causes Loss of adhesion between belt and carcass ply from excessive heat and stress generated by improper inflation pressure, overloading, excessive high speed and friction from sudden starting, cornering and braking Preventions - Maintain proper inflation pressure. - Avoid overloading and overspeed driving. - Avoid sudden starting,cornering and braking.

  45. TB Tires – Side Area - Vehicle Damage Uniform scuffing or cutting on some part of the tire outside surface Appearance Photos

  46. Side Area - Vehicle Damage Probable Causes - Contact with vehicle hardwares. - Can also be caused by objects trapped between dual tires. Preventions - Analyze the cause of the condition and correct it.

  47. TB Tires – Side Area - Weather Cracking Appearance Numerous small cracks in the rubber surface Photos

  48. Side Area - Weather Cracking Probable Causes - Rubber surface exposure to ozone. - Aggravated by long periods of parking and/or sea side area. Preventions - Minimize parked vehicle time.

  49. TB Tires – Side Area - Folklift Damage Cut similar to impact damage on a brand new tire Appearance Photos

  50. Side Area - Folklift Damage Probable Causes - Caused during handling procedures by folklift. Preventions - Inspect tire upon receipt.