[mikelangr]

That first picture is scary for sure!!! There isn't even any triangular bracing, the only thing stopping that from crashing down must be a lack of breeze???

The other ramps look nicer, mostly because they seem to have a wider base and aren't as tall. I would say, if you can afford the space, make the bases wider, add more triangular bracing, and maybe even connect the two to each other at one of the ends? Even the nice red/white ramps... If one of your big buddies decides to hip check the car as he's trying to sneak past in the garage might cause that parallellogram to come crashing down sideways.


Or, maybe, once you have the car on there, if its on your nice wide driveway, install some stabilizer wings like this tornado shelter idea. The wiings go on after the shelter is mounted, and then dirt is piled up in between the wings. No dirt needed in this case :P