The spare tire on SUVs and trucks is usually found underneath the vehicle, where you'll need to find the crank hole to lower it to the ground when changing a flat tire explains our expert.Expert: Jeff WongBio: Jeff Wong has a masters degree in Mechanical Engineering. He has owned & operated an aftermarket automotive parts business for five years. He has been working on automobiles for 17 years.Filmmaker: Joshua Kidwell [More] [Less]