I had ordered weather tech floor liners for my x5 they came with holes in the front and all I had was Velcro. I looked all over the net for the hold downs and in the end decide not to fight it. I went to home depot and got some stick on Velcro applied it to the underside of the mats and now they stay put. When getting the stick on Velcro be sure to get the kind specified for rubber and "dashboard" use. Other varieties may not hold up to extreme temperature fluctuations.