Grade A
- Virgin casing that has not been retreaded previously
- No cuts or breaks
- No repairs or impact breaks
- No exposed steel
- No existing repairs
- Sidewalls are in good condition
- No weather cracking
- No distortion of tubeless bead surfaces
- Not regrooved
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Grade B
- Same as Grade A with exceptions of :
- Minor cuts and chips with some exposed steel in the tread area
- Maximum of two nail holes in tread area only. Must be 1 1/2 inches in from the tread edge with maximum diameter of 3/8 inch.
Grade R-1
- Previously treaded once in full, in top tread, or in bead to bead.
- Maximum two nail holes in tread area only. Must be 1 1/2 inches in from tread
- All other conditions are same as Grade A
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