Originally Posted by xSNEEKSx
What do you mean by lip? I would like to get an understanding so i can do it your way since i dont own any jacks.
the concrete slab of most garages is different from the driveway slab. it is usually elevated about an inch off of the ground from the driveway. they are saying back the car where the tires are just about to roll off the lip so you get another inch of ground clearance plus any slope on the driveway can be used for you to get under the car more easily.
but, not all garage slabs have this lip.