The present invention is a unique tire flap for use on off-road vehicle wheel assemblies utilizing standard safety rims, tires, rim locks, and inner tubes, so that the vehicles can operate in high performance off-road conditions under low or extremely low tire pressures (4psi-10psi), without incurring flats due to a pinched tube. The tire flap of the present invention is made from low density impact absorbent foam, such that the flap absorbs the energy of a first and second type pinch tire condition that prevents the inner tube from rupturing.