KL MotoPark

Term NASCAR crew chiefs use for adjusting the weight on the car’s chassis. A jackscrew can be turned to either add or subtract pressure from the coil spring, thus shifting the weight and altering the car’s handling. ‘‘A round of wedge’’ means turning the jackscrew one time

Since weight transfer is critical to traction, vehicles are set up to provide a desired weight transfer to the rear wheels. When the vehicle accelerates, the front wheels lift and the weight shifts to the rear wheels, which makes them less likely to spin

Cables are fitted to prevent the wheels becoming separated from the car in an accident. Also called wheel teathers

The distance between the front and rear axles

Used to prevent excessive front wheel lift

A Tunnel which is used to test the effects that moving air has on racing cars. Air is forced through the tunnel at different speeds, the effects are measured by special wind gauges and electronic devices

Nylon mesh screens attached to the driver's window keep the driver inside the car in the event of an accident

On the front, sides and rear of an open-wheel car, they fine-tune the handling

Introduced 1997 as a new way to homologate Group A cars. Earlier all cars homologated were required to be available to the public, thus one could buy such classic cars like Toyota Celica or Lancia Integrale. However, not every manufacturer wanted to offer such, usually very expensive, car in their model range. To attract more manufacturers in World Rallying, FIA allowed construction of cars by taking any sufficiently produced platform, which could then be fitted with 4WD drive and 2 liter turbo engine, even if no such model existed in the range, to create Group A rally car. Because of this, there are no high performance variants of Ford Focus or Toyota Corolla even though they win rallies in WRC form

Top level of global rallying run by FIA, consists of rallies held around the world. Winner of the series is declared World Champion of that season