Yes, cab rear sidewings are important…

  Granted, the cab-top 3D fairing or ‘spoiler’ has become the accepted thing to fit. It makes aerodynamic sense, and enhances the truck’s image. However, carefully-monitored tests have shown, in one example, that a 3D fairing alone yielded a drag reduction of 26.8%,  but when sidewings were added, this increased to 38.3%. If the fuel … Continued

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