Touring car racing /

Touring car racing is a general term for a number of distinct auto racing competitions in heavily-modified street cars. It is notably popular in Argentina, Australia, Brazil, Germany, Japan, Scandinavia and Britain. While rules vary from country to country, most series require that the competitors start with a standard body shell, but virtually every other component is allowed to be heavily modified for racing, including engines, suspension, brakes, wheels and tires. Aerodynamic aids are usually added to the front and rear of the cars. Regulations are usually designed to limit costs by banning some of the more exotic technologies available (for instance, many series insist on a "control tyre" that all competitors must use) and keep the racing close (sometimes by a "lead trophy" where winning a race requires the winner's car to be heavier for subsequent races). In this, it shares some similarity with the American stock car racing (governed by NASCAR). However, touring cars are, at...