Corner weights
Corner weights are the loads on each of the four tires measured on scales, used to balance a car's chassis setup.
Also called: corner balancing, scaling
Put a car on four scales, one under each wheel, with the driver or equivalent ballast in the seat, and you get its corner weights. Together they reveal front-to-rear and side-to-side distribution and, most importantly, whether diagonal pairs of tires are carrying equal loads.
With adjustable coilovers, changing ride height at one corner moves weight diagonally across the car, much like shimming a wobbly four-legged table. Corner balancing uses those adjustments to even out the diagonals without changing the total weight.
An unbalanced car often behaves differently in left-hand corners than in right-handers and can pull under braking. Corner weighting is done on level pads with tire pressures set, fuel at a known level, and the suspension settled. It is one of the last steps of a setup, after alignment and ride height.
Balanced corner weights make a car handle the same in both directions and brake straight, which builds confidence at the limit.