There are several modifications available to car owners looking to improve their vehicle's appearance and performance. As some manufacturers are willing to produce modifications for international clients, the differences in legality can become a serious problem for American motorists. This can also be complicated by each different state's laws concerning Between street racers and enthusiasts willing to bend the law, illegal car modifications can readjust a car's performance to be dangerous for the driver and can cause mechanical malfunctions.
Illegal modifications, also known as mods, use aftermarket parts to make a car handle better, reach higher top speeds, and increase gasoline use efficiency, to name a few examples. Some mods are used to reduce the weight of a vehicle, which can increase speed and handling, while others create a more aerodynamic body. Other modifications can include reworked wheels, either providing greater traction or adding aesthetic flair with chrome or spinners.