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Auto‑Trac can be installed without moving (or jacking up) the vehicle! The patented, ratcheting tightening system automatically tightens the chain while driving. Just connect the inside cable, attach the two outside selftighteners and drive! No additional chain tensioners are necessary or recommended. Auto‑Trac will meet Class “S” clearance requirements on SUVs and pickup trucks, as well as normal passenger cars (matching the capabilities of most of our “Z” cable products). This is possible because of a highly effective, patented tensioning system. Auto‑Trac cross member links are made of manganese alloy steel, allowing them to be shorter, narrower and lighter than conventional cross members. This reduces “fly‑off” during operation and provides more gripping points. The low‑mass “D” cross section of the links also contributes to longer wear because the impact of the cross members on the road surface is reduced and the surface area contacting the road is increased. Do not continue driving with a loose or broken cross chain
- Worry-free self-tightening ratchets provide automatic tightening and centering
- Easy installation and removal in minutes
- Do not exceed 30 MPH with these chains on
- Diamond pattern cross chain provides a smoother ride and superior traction
- Meet class ‘S’ clearance requirements
- Eliminates loose chains and retightening stops