1. KUMHO TIRE AS POLICY

2. Customer Satisfaction
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. ◈ Non adjustable condition
2. Warranty Coverage
2. Warranty Coverage
Kumho Tires are warranted against defects in materials or workmanship in 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 (2/32nds of 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
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 If KUMHO 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. A. Confirm the brand name : KH, MS, RC
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. ③ ② A. Measuring Method ①The most worn out point R.T.D.(mm) =
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 ② ③

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

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

16. - Originated by the joint overlap of cord sheet during
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. A bulge on the sidewall of a radial tire
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. - A puddle or hole on the road
Cord Break Up (CBU)
※ Probable Causes
- A puddle or hole on the road

20. 1. In a short time, we can find a bulge in the part which got impact
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. - The breakage of the body ply cords due to impact
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. Radial, pencil shaped bulge on the sidewall of a radial tire
PC & LT Tires- Spread/Missed Cord (Bulge)
Radial, pencil shaped bulge on the sidewall of a radial tire
Appearance
Photos
Cord
Cord Missing

23. Wider than normal carcass wire spacing.
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. Mark of the tire sidewall damage
Spread/Missed Cord (Bulge)
◈ The difference of Bulge and Cord Break-up
Bulge
Cord Break up
Outside
(sidewall/Rim)
Both side
One side
No-mark
Mark of the tire sidewall damage
Mark of the rim damage
Inside
Mark of the cords break

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

26. - Shipping or storaging condition for a long time.
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. A bulge or split through the upper shoulder & tread area Appearance
PC & LT Tires - Belt Separation
A bulge or split through the upper shoulder & tread area
Appearance
Photos

28. - Loose or separated steel wires due to low air pressure
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. A bulge or split through the tread and shoulder area of a bias tire
PC & LT Tires- Tread&Shoulder Separation(Bias)
A bulge or split through the tread and shoulder area of a bias tire
Appearance
Photos

30. - It is mainly due to underinflation.
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. Circum cracks above the rim line area with cord exposed Appearance
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. Bead toe rubber is torn or cut
PC & LT Tires –Torn Beads
Appearance
Bead toe rubber is torn or cut
Photos

34. - Poor mounting/demounting techniques with tire tools
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. Local areas of distortion in the bead
PC & LT Tires –Distorted Bead
Appearance
Local areas of distortion in the bead
Photos

36. Improper use of tools, or incorrect techniques used
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. Circumferencial deformation and/or burst of the bead area Appearance
TB Tires – Bead Area - Bead Deform & Burst
Circumferencial deformation and/or burst of the bead area
Appearance
Photos

38. Rusty rims, improper bead lubrication, and bent or damaged
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. Circumferencial cracks above the rim line area with cords exposed
TB Tires – Bead Area-Turn-up & Chafer Sepa.
Circumferencial cracks above the rim line area with cords exposed
Appearance
Photos

40. - Improper bead seating,improper rim size,overloaded or
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. Circum cracks above the rim line area without cord exposed Appearance
TB Tires – Bead Area- Flow Crack
Circum cracks above the rim line area without cord exposed
Appearance
Photos
Crack

42. Improper rubber flow during the manufacturing process.
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. Loss of adhesion between belt and carcass ply from excessive
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. Uniform scuffing or cutting on some part of the tire outside surface
TB Tires – Side Area - Vehicle Damage
Uniform scuffing or cutting on some part of the tire outside surface
Appearance
Photos

46. - Contact with vehicle hardwares.
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. Numerous small cracks in the rubber surface
TB Tires – Side Area - Weather Cracking
Appearance
Numerous small cracks in the rubber surface
Photos

48. - Rubber surface exposure to ozone.
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. Cut similar to impact damage on a brand new tire Appearance
TB Tires – Side Area - Folklift Damage
Cut similar to impact damage on a brand new tire
Appearance
Photos

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

51. TB Tires – Side Fatigue Rupture(Zipper crack)
A circum break in the mid to upper sidewall exposing an even line of broken cords
Appearance
Photos

52. Severe underinflation or overloading condition which
Side Area - Side Fatigue Rupture(Zipper crack)
Probable Causes
Severe underinflation or overloading condition which
produces casing cord fatigue, often a result of a puncture.
Preventions
- Routinely inspect all tires with inflation pressures.
- Avoid overloading.

53. TB Tires – Side Area - Radial Split
A vertical break through the sidewall occuring between two body ply cables, that does not break
Appearance
Photos

54. - It can occur in overinflated and/or overloaded condition.
Side Area - Radial Split
Probable Causes
- Severe impact.
- It can occur in overinflated and/or overloaded condition.
Preventions
- Maintain proper inflation pressure and loading.
- Review driver training.

55. Regular smooth opening of the sidewall rubber (No cords are exposed)
TB Tires – Side Area- Open Sidewall Splice
Regular smooth opening of the sidewall rubber (No cords are exposed)
Appearance
Photos

56. -Loss of adhesion in sidewall splice due to manufacturing process.
Side Area - Open Sidewall Splice
Probable Causes
-Loss of adhesion in sidewall splice due to
manufacturing process.
Preventions
-Consult with Kumho Eng’r.

57. TB Tires – Tread Area - Belt Separation - I
Belt wire protruding through the exterior or interior surface of the tire
Appearance
Photos

58. A bulge or split through the upper shoulder & tread area Appearance
TB Tires – Tread Area - Belt Separation-II
A bulge or split through the upper shoulder & tread area
Appearance
Photos

59. - Loose or separated steel wires due to low air pressure
Tread Area - 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.

60. TB Tires – Tread Area - Chipping/Chunking
Rough, abraded tread surface with numerous small flakes or chunks of tread removed
Appearance
Photos

61. - Misapplication of the tire to service conditions.
Tread Area - Chipping / Chunking Tread
Probable Causes
- Misapplication of the tire to service conditions.
- Caused by excessive loading on bad roads.
Aggravated by overinflation and short turns, especially on
drive axle tires.
Preventions
- Review tire selection.
- Avoid overloading
- Use traction type of tires in drive axle.

62. TB Tires – Separation Due To Stone Drilling
Damage Causesd by stones trapped in the tread which penetrate the tread extend into the belts
Appearance
Photos

63. Tread design and/or misapplication of the tire to service
Tread Area - Separation Due To Stone Drilling
Probable Causes
Tread design and/or misapplication of the tire to service
conditions (gravel roads/Quarry operation)
Preventions
- Remove remaining stones from the tread frequently.
- Review tire selection.
- Avoid overloading condition.

64. TB Tires – Tread Area - Rib Tearing
Tear at the base of the main tread grooves, generally at the shoulder area
Appearance
Photos

65. - Caused by running over curbs and rails, or by severe
Tread Area - Rib Tearing
Probable Causes
- Caused by running over curbs and rails, or by severe
localized impacts.
- Aggravated by overloading, hot tires and sharp turning.
Preventions
- Review driving procedures.
Avoid overloading condition, high speed driving and sharp
cornering.

66. Each lug around tire worn high to low from front to back edge
TB Tires – Tread Area - Heel & Toe Wear
Each lug around tire worn high to low from front to back edge
Appearance
Photos

67. - Untimely rotation of tires.
Tread Area - Heel & Toe Wear
Probable Causes
- Untimely rotation of tires.
- Under-inflation and/or overloading condition.
- Caused by mismatched inflation pressures or tire diameter
in a dual assembly and certain conditions such as
mountainous terrains, etc.
Preventions
- Rotate tires regularly.
- Maintain proper air pressure and avoid overloading.
- Correct defective suspension.

68. Others - Run Flat (TB-R)
Advanced deterioration of the tire affecting 360⁰ of tire sidewall & inner liner
Appearance
Photos

69. Others - Run Flat(PC/LR-R & Bias)
Advanced deterioration of the tire affecting 360⁰ of tire sidewall & innerliner
Appearance
Photos

70. - Rapid loss of inflation pressure - Continue to run after puncture.
Run Flat
Probable Causes
- Rapid loss of inflation pressure
- Continue to run after puncture.
- Running under extremely low inflation pressure.
Preventions
- Maintain proper inflation pressure.
- Check the necessary things that related to air leakage.
(rim,valve & cap, tube and flap etc.)

71. Others – Impact/Cut Damage
Localized break through the tire rubber and the casing by impact or cut
Appearance
Photos

72. Others – Impact/Cut Damage
Localized break through the tire rubber and the casing by impact or cut
Appearance
Photos

73. Others – Impact/Cut Damage
Localized break through the tire rubber and the casing by impact or cut
Appearance
Photos

74. - Severe, concentrated impact with a foreign object or a chuck hole.
Impact/Cut Damage
Probable Causes
- Severe, concentrated impact with a foreign object or a
chuck hole.
- Aggravated by over-inflation and high speed.
Preventions
- Maintain proper inflation pressure.
- Avoid overloading and over-speed driving.

75. Others - Penetration/Repair Related Bulge
An excessive or slight bulge in the sidewall associated with a repair or penetration
Appearance
Photos

76. - Cord breakage due to penetration,impact, or cut.
Penetration/Repair Related Bulge
Probable Causes
- Cord breakage due to penetration,impact, or cut.
- A tire with a repair may show this condition soon after
being repaired.
Preventions

77. Others - Penetration
Evidence of a puncture or damage by foreign object through the tread or side area
Appearance
Photos

78. Others - Penetration
Evidence of a puncture or damage by foreign object through the tread or side area
Appearance
Photos

79. Repaired on the interior or exterior area of the tire Appearance
Others - Repaired Tire
Repaired on the interior or exterior area of the tire
Appearance
Photos