Super Z6 was designed by SCC for cars, trucks, and SUV's with restricted clearance around the drive tires. Based on SCC's experience with other products in the "Z" family, Super Z6 has one very special quality: it will operate in less than half of the space required by most cable chains and tire chains. Super Z6 requires only 6mm (1/4") of sidewall clearance to operate. The diagonal pattern provides constant traction, aggressive starting, stopping, cornering and ensures compatibility on vehicles equipped with traction control and electronically monitored brake systems. Traction coils, made from alloy steel are more durable than conventional tire or cable chains. A split outside cable with two fastening positions allows for easy installation without moving the vehicle, and there's no need to stop and retighten. Most cars, trucks and SUV's manufactured since the late 80's will have special clearance requirements. Don't be fooled by the appearance of the tire positioning on your vehicle. Traction products not only have to fit the tire, but must also fit within the space provided around the tires. Most issues are hidden from view as they are behind the tire near braces, suspension parts, strut housings, splash guards and fuel and brake lines. More information should be located in the owner's manual under chains, traction devices, tires or similar heading. It is important to select a traction product that is compatible with the minimum class assigned to your vehicle. The class assigned to your vehicle is based on the original tire and wheel size shown in your owner's manual. Using a different size tire may affect the chain's ability to operate properly. Some owner's manuals state that certain tire sizes do not provide enough clearnace to accommmodate winter traction products. The fact is, many of these vehicles can use SCC's Super Z6. Trying to measure the nearest obstruction under your vehicle could prove tricky.