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.
Race Tire vs. Street Tire. On a typical race weekend, a NASCAR Sprint Cup Series team will use between nine (9) and fourteen (14) sets of tires depending upon the length of the race and type of track - short track, speedway, superspeedway or road course. By comparison, an average set of street tires gets replaced approximately every three years. NASCAR Sprint Cup Series racing tire specifications also differ from race to race depending upon the degree of track banking and type of racing surface (asphalt, concrete, or mixture of both).