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----- 我々、トラックサークル・ドットコムのエキスパートな経験に基づいた検品をした後に、ケイシングをお客様の元にお届け致します。

ケイシングの品質標準は、以下の条件にて守っております。

GRADE "A"

(a) This grade casing has not been previously retreaded, remoulded nor repaired with a section.
(b) This grade casing has at least 1/32" of original groove tread depth remaining.
(c) This grade casing has not been regrooved.
(d) This grade casing do not contain the followings: :
1 Significant weather checking
2 Damage requiring a major section repair
3 More than 2 nail holes in Nylon tire casing and more than 1 nail hole in Radial tire casing.
4 Penetrating injury is less than 3mm.
5 Obvious run-low conditions
6 Tread skid
7 Deep tread cutsby sharp rocks, glasses, metals, etc. for damaging nylon or steel cords.
8 Excessivesidewall abrasion or damage.
9 Sidewall ripples or bulges
10 Bead damage or deformity
11 Circumferential cracking around the bead area
12 Separation

GRADE "B"

This grade casing may contain some of the conditions mentioned below, but it is very limited and also not more than 2 conditions:
1 Casing with no remaining tread depth
2 Previously repaired nail holes
3 Deep tread cuts within the allowable limit
4 Section repair required
5 Maximum 4 nail holes but not grouped together in nylon tire casing and maximum 2 nail holes in radial tire casing.
6 Penetrating injury is less than 6mm.
7 Minor damage on sidewall and /or shoulder (rubber only) within the allowable limit, but no damage to fabric or steel cords
8 Damage on rubber in bead area, but no damage in bead wire itself
9 All other conditions are same as Grade "A" casing

GRADE "R1"

This grade casing (so called once recapped casing) has been previously recapped by full or top and may contain some of the followings:
1 Previsouly repaired damage within the allowable limit
2 Tread cuts in rubber area within the allowable limit
3 Skid within the allowable limit, but underlying fabric and steel are not exposed
4 Sidewall damage in rubber area only
5 All other conditions are same as Grade "A" casing