Also called swayback, the spine of a person with lordosis curves significantly inward at the lower back. Kyphosis. Kyphosis is characterized by an abnormally rounded upper back (more than 50 degrees of curvature). Scoliosis. A person with scoliosis has a sideways curve to their spine.
NASCAR Nextel cup race cars are very heavy and have about 750 horsepower. Other specifications include: Busch series race cars are similar to the Nextel cup cars. They have less horsepower due to the carburetor. They also have a shorter wheelbase and spoiler.
On average, light truck tires less than 17 inches in diameter weigh around 35 pounds, and semi-truck tires weigh between 105 and 110 pounds. Passenger car tire weighs between 20 and 22 pounds on average. One size of tire varies from manufacturer according to their compound, added features, tread, etc.