I ordered a total of 4 of these ramps. My new pole barn's concrete apron was a tad above the level of the gravel. The tramps worked great for my truck, tractors and UTV... they did not work well at all for my Harley! Going up the ramp was great until the front tire bumped the lip of the garage floor. The slightest application of the throttle set the rear tire to spinning and skidding sideways. The ramps are really slick! The last thing that you want is a 900-pound motorcycle laying on its side! I have ordered some non-skid strips which I think will solve the issue. Other than that, the ramps are well-worth the money!