Tire chains are metal traction devices fitted around tires to improve grip on snow and ice, commonly called snow chains.
When winter roads turn slick, ordinary tires lose their bite. Tire chains solve that problem by wrapping the tread in metal links that grab snow and ice, giving you traction for acceleration, turning, and braking when you need it most. They aren’t for everyday winter driving—they’re a temporary tool for severe conditions.
How Tire Chains Work
Tire chains do one simple job: they add bite. The metal links press into snow and ice, letting the tire reach firmer material underneath or creating extra friction on packed surfaces. That grip translates directly into better control when accelerating from a stop, steering through a corner, or stopping on a hill.
Chains wrap around the tire tread and are secured snugly so they spin with the wheel. They come in several patterns, including ladder, diamond, cable, V-bar, studded, and square-link designs. Each pattern trades off between aggressive grip, ride comfort, and how much clearance your vehicle needs.
Clearance Classes And Fitment
Before buying any set, you need to know your vehicle’s clearance. The Society of Automotive Engineers defines three clearance classes that tell you which chains fit your wheel wells. Measure the space between your tire tread and the wheel well, plus the gap between the tire sidewall and suspension components.
Check your tire size on the sidewall first, then measure the clearance. Wrong sizing damages tires, chains, and wheel wells—and a set that’s too tight can be dangerous. When you’re ready to buy, our tested roundup of the best vehicle tire chains breaks down the top options.
Installing And Using Chains Safely
Installation is straightforward once you know what to do, but practice before the storm hits. Lay the chains flat on the ground and check for twists or tangles—a tangled chain can snap during use. Drape them over the top of the drive tires, hook the inner cable, then pull the outer cable tight and secure it. Drive forward a short distance and re-tighten, since chains always loosen slightly at first.
Use chains only when conditions genuinely require them. If the road clears, take them off—running chains on bare pavement damages both the chains and your tires. State rules vary on when chains are required or allowed, so check local regulations for the areas you drive. Cooper Tire’s tire chain guidance covers fitment basics in more detail.
Chains improve traction, but they don’t replace good judgment. Slow down earlier, leave more following distance, and drive smoothly. The metal links give you grip on snow and ice—they can’t give you back control if you’re going too fast.
References & Sources
- Cooper Tire. “Tire Chains” Explains tire chain fitment, clearance requirements, and safe usage.