Quote Originally Posted by flynntuna View Post
Remember the concrete needs to be 4-6" thick. If its not thick enough you can cut out a section of the floor and dig out a couple inches or so and repour to spec.
The MaxJax instructions say "The floor on which the lift is to be installed must be 4-¼” inch minimum thickness concrete, with a minimum compressive strength of 3000 psi, and reinforced with steel bar." The MaxJax is only rated at 6,000 lbs, versus full size lifts that are much more. Plus it has nice wide bases on the posts. Unless really old, most garage floors should work OK. The thickness can be confirmed when installing the anchors.