The excellent tread copund formulation offers high resistance to cutting and chipping for long tread life TIRE SIZETRA CODESTAR RATINGTD(MM)ISO INDEX23.5R25E4 47 176B/185B26.5R25E4 54184B/193B 29.5R25E4 57191B/200B Tread Compound: T2 RADIAL OTR TB598S