It works well on axles that close together, but you may have issues if your axles are spread apart. I have seen from others on here that asphalt and concrete surfaces are not to kind to the bolt heads the ramp uses to grip surface as you start your climb up. So they may be "one and done". I really don't know yet I have one but have not used it yet. At home I have a stack of 2X10's screwed together that works great. Free material courtesy of the housing construction.
2016 Ford F250 XLT 4X4 6.2L
2015 Rockwood Signature Ultralite 8329SS
Nights camping in 2016: 19 nights
Miles traveled in 2016: 2,575