an industrial solid tire for heavy - load , off - road use having a cast polyurethane tire thereon is produced by a batch method . the tire is a heat cured polyurethane produced from a dispersion of a prepolymer , a curative and an amount of a silicone dispersing and lubricant agent . the amount of silicone is between 1 . 0 and 4 . 0 parts per hundred of the prepolymer . a method for manufacturing the tire is included .