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372105 by Suretrac is a CargoMax ZT301 trailer tire in size ST205/75R15. It features a load index of 107/102, an L speed rating and a black sidewall. The tire is designed specifically for trailer applications and is identified as an 8-ply / Load Range D tire. Its published specifications include a 27.1" overall diameter and a recommended wheel width range of 5" to 7". Verify the trailer manufacturer's requirements before installation.