I bought a set of metal car ramps at Advance auto that the box said were 9" wide. My front tires are 9 1/2" so I didn't think 1/2" would matter. Wrong. Apparently from the weight of the car they splay out to almost 11" and are way too wide. Also it was obvious the air dam was going to hit also. I found a set of Rhino ramps that are 11" wide at the Auto Barn on the internet for $47 but they they are made of foam plastic. Are these things as safe as metal? I'd really like to find some that are 12" wide in case I ever need to put the back end up. The rear tires are 11" so they are probably really 12" wide. Anyone have any thoughts on this. Thanks,