Cross-weight percentage is a measure of the vehicle’s diagonal weight relative to its total weight. Cross-weight percentage is calculated in a similar manner to the previous calculations, but different values. Add the right front weight to the left rear weight and divide the sum by the total weight of the vehicle. Cross weight is altered by changing the ride height in each corner. If you want to increase the weight on the right front, raise the left rear, alternatively to decrease the weight, lower the left rear.
Cross-weight adjustments can have a huge effect on the handling of your vehicle, particularly the difference between a left- and a right-hand turn. Offset corner-weight set-ups should only be used on a circuit car, as it can be very dangerous on the street because handling will vary when making a left or right turn due to the imbalance in the cornering force. In most cases a neutral balance is the safest bet for most applications anyway, with variance in circuit cars usually restricted to only a few percentage points either way.
WHEN IT CAME TO THE CROSS WEIGHT PERCENTAGE, IT WAS A LITTLE HARDER TO GET THIS THE PERFECT 50%. OUR STARTING POINT WAS A LITTLE OFF, AND THE HONDA HAD VERY HEAVY SPRING RATES, REQUIRING A LARGE AMOUNT OF ADJUSTMENT TO CORRECT THE BALANCE. HAD THIS BEEN A STREET CAR, THE SPRINGS WOULD HAVE BEEN A SOFTER RATE, AND IT WOULD HAVE REQUIRED LESS ADJUSTMENT, AS THE WEIGHT TRANSFER WOULD HAVE BEEN GREATER.