Measuring Vehicle Height

Front-axle height: Measure from road contact surface to measuring point on cross member/bulkhead of the body -arrows- .

Fig 1: Locating Front-Axle Height Measuring Point
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Rear-axle height: Measure from road contact surface to lower edge of diagonal brace (between the ribs) at wishbone fastening point -arrow- .

Fig 2: Locating Rear-Axle Height Measuring Point
Courtesy of PORSCHE CARS NORTH AMERICA, INC.