Hi Romad,
You might want to look at youtube for 5T start ramps reviews - a guy bought them and tried to get his truck up onto them - he ended up rolling over them since he couldn't feel the front stop. He probably should've marked where he should've stopped, but his truck was a manual and that's harder to do on an incline. Be careful.
-Jerry

"Buyer Beware Home Depot Stark heavy duty 5 ton auto service ramps"