Four post lifts - what are they for? Who is going to benefit from their features? If you're wondering whether it is a good choice for you, then, overall, 4-post lifts are perfect for car suspension diagnostics. Long ramps (4250 mm) provide perfect working comfort - be it a passenger car, be it car-derived vans. Do they raise high? The raising height of these units is 1700mm (or 1750 mm in case of the L-420 model). Such a distance means you will get perfect working comfort while being underneath the car.