Lastly I would like to inject a little about the ramps. I have found that when utilizing ramps in the garage where the cement is reletavely smooth, one should bolt ramps to garage floor.
Rhino Ramps are made of HD Plastic and can withstand 12,000 lbs ea.! They are also Low Profile to allow most lowered car to drive up.
The way in which i did mine was to allign ramps in front of vehicle where you would like your car to climb up and be positioned at the top part of the ramp. Then located in the front part of either ramp is a 5/8" hole to place a bolt. Once you mark the center of the holes, take a 5/8" cement bit and drill hole as per instructions on the 2 1/2 " Lead anchors. Drop lead anchors in, place Rhino Ramps as positioned above, lag 2 ea. 3" bolts with washer thru ramps into cement and Wah-Lah!

Your ramps are going anywhere.
Always take the necessary measures to do the job right and have a happy and safe holiday.
Sam