I am using these Vestil pads with a 14,500lb GVW RV that uses 225/75r16 tires. I prefer chocks that don't crack or crush like plastic chocks. When I first started motorhome driving I used what I carried in my cars and trucks, but I quickly realized that with heavier motorhomes and/or larger wheels, heavier wheel chocks were required. This Vestil wheel chock is taller and longer than traditional car wheel chocks and the handle provides easy leverage when removing the wheel chock from under the wheels. I store pads in the basement of my RV and because the handles are nested, these large pads take up a bit more space than the smaller pads.