I have a 2005 Infiniti G35 Coupe with the sport suspension and 19 wheels first of all those that have said great for cars with low ground clearance i dont know what cars they are driving that they consider low ground clearance the sport suspension and 19s come factory on my car and i couldnt clear it going forward. However if i need to lift the back end off the ground yea they work fine but as another person mentioned the tires will slip on them i spun up the rear tires a little when lifting the back up and that was when they were new i cant imagine after repeated use. All in all a waste of money just spend the money where it should be spent in a proper floor jack and jack stands and do it right the first time instead of trying to cut corners and do it quick and the lazy way.