Tires do not include foam inserts.The REBAR has been developed for indoor tracks, as well as hard packed, bluegrooved outdoor tracks. The REBAR features double side rails on the edges of the tire that provide additional sidewall support, increasing side bite so your buggy stays planted in the turns. The wide staggered center lugs give the REBAR incredible forward traction to hook up the power and launch your buggy out of the corners and over jumps. Features: