The apertures, or holes, molded into the sidewall of the tire provide cushioning. "Our Nu-Air semi-pneumatic tire is a solid tire that has air inside, but the air isn't confined," says George ...
semi-pneumatic tires Models MDL-8B and MDL-8H offer a choice of 8-hp Briggs & Stratton or Honda engine and come mounted on 10-inch pneumatic tires ...