The most critical factor is the Load Capacity, which must exceed the combined weight of the vehicle and its heaviest cargo; typically, for industrial use, look for ramps rated between 10,000 lbs to 30,000 lbs per pair. Material choice is equally vital: High-strength 6061-T6 Aluminum offers a superior strength-to-weight ratio and corrosion resistance, while Reinforced Steel is preferred for permanent, high-impact loading docks. Additionally, ensure the Ramp Width is at least 2-4 inches wider than the largest tire it will accommodate to prevent accidental run-offs.