You can go about balancing the car 2 ways and it's accomplished by raising or lowering the individual corners of the car. Cross weight, what Jim is speaking of is to have the same percentage (50%) of weight: right front left rear/left front right rear. This is the most common way. Some racers of production street cars will set up the car a different way. (less common) If the drivers front is 52% of the total front weight they will set the rear to have 52% of the total rear weight. That way each side has the same percentage front to rear. This has to be done at race weight with the driver in the car, a typical gas load etc. Most set the car up with the gas tank almost empty so the car is best at the end of the race. For the street, cross weight is a better choice. My car is cross weight balanced but I'd like to try the side to side front rear percentage system one day. I need scales and a proper spring compressor first.

Les