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Percy's tire simulator wire is then carefully measured with a millimeter tape and adjusted to equal the 285mm cross section (11.22 inches). Using a tape measure, a reading is taken from the center of the hub to the top of the simulated cross section of wire. Since the tire dimensions were 26.97 inches (approximately 26 31/32), half of that diameter is 13.485 inches (approximately 13 15/32). Minor adjustments for height were then performed on the wire, and the cross section and diameter of the tire was checked a second time, whereby the dimensions were verified.