Casting is an efficient way to produce a high-quality, strong alloy wheel. There are two methods used. One system is known as gravity casting and the other is low pressure or negative pressure casting.JWHEEL is currently one of the most recognizable aftermarket wheel brands in the world. For almost 30 years JWHEEL has set their standards high and watched enthusiasts from all over the world embrace not only their wheel styles but also the lifestyle that comes along with them. The story of JWHEEL is far more than all the wheels we have made. The real story of JWHEEL is about car enthusiasts w ho are behind every design, every wheel, and every aspect of the automotive tuning lifestyle.