We use a four post lift at work. We can drive full size school buses on it or pickups. The ramps are about 18" across. A **** Ranger will just fit on it as well as 84 passenger bus. At first I didn't like it cause you had to bend over to get under the ramps. If you raise it high enough to walk freely, then you cannot reach the vehicle. But the safety factor far out weighs the complants. With a crossrail air jack, you can lift the frame or axle with ease.

Check with the manufactor about concrete thickness under the posts.

Joe