My rationale is that a 4 post isn't lagged to the floor and most come with castors. http://www.ebay.com/itm/Atlas-Garag...1147803310&pt=Motors_Automotive_Tools&vxp=mtr
I agree with KP but the cost of good american made 4 post with decent pair of roller jacks is more than double the cost of 2 post.I am looking for a lift as well. (Nice Used Unit Would Be Nice)
This is want I have came up with.
2 Post:
* Are more open and cost less
* Not as safe because vehicle and be pulled off contact points (many photos on line showing so)
* Requires a thicker floor base.
* Need to get down on hand and knees to position lifting arms (Something I do not really want to do as I get older...)
* Not good for storing anothe vehicle on or under
4 Post:
* Cost more then a 2 post
* Are more safe them a 2 post and can drive on not having (No need to get down on hand and knees to position lifting arms (Something I do not really want to do as I get older...)
* In most cases floor thickness is not an issue
* Can store vehicles on and under
* With jack trays can do mostly everything a 2 post can
two post lifts have a bar on top of it that shuts the lift off when it reaches it.there shoudn't be any chance of hitting the roof of one unless you miss to bar on top.