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The Hows and Whys of Cornerweights.


The objective is to make the weights on the scales proportionally equal. Since weight is only transferred diagonally, you balance the weight by transferring it from front to back (or back to front), diagonally across the car. In the first example, the car has 52.8% of the left side weight on the front tire and 49.0% of the right side weight on the front. To balance each side, we first take an average of the two percentages.


The result is:

front = (LF RF)/2 or (52.8 49.0)/2 = 50.9%
rear = (LR RR)/2 or (47.2 51.0)/2 = 49.1%

We adjust the LF to weigh (1364 X 50.9%) = 694 and the RR to (1191 X 49.1%) = 585. After adjusting the car by taking pressure off the LF and RR, we arrive at the corner weights shown in example 2.


Adding the opposing corners, we get:

694(LF) 585(RR) = 1279
606(RF) 670(LR) = 1276

Note that the diagonal totals are effectivley equal (within the 1% tolerance of electronic scales).