Process to determine the tire air pressure and the wheel load of vehicle tires

For a given tire (1) type, tire pressure is varied and measured as well as wheel load and jounce and the signal plots recorded as the deformation sensor (2) passes through the tire/road etc contact recording the signal curves between signal zero and amplitude minima. These give characteristics of jounce over signal curve width, wheel load over amplitude minima and tire air pressure over amplitude minima. Components involved include receiver (3), evaluator (4), characteristic storage and indicator (6).