Best Tow Chains for Tow Truck Operators in 2026: A Professional Buyer's Guide
A tow chain failure at highway speed is not a gear problem. It is a liability problem, a safety problem, and potentially a career-ending problem.
When you are running one to five trucks, there is no margin for a dropped load, a DOT citation, or a damaged vehicle. The chain you spec matters as much as the rig you drive.
This guide covers what you need to know to buy the right tow chains in 2026: grade designations, sizing, application types, and what separates professional-grade hardware from gear that will let you down mid-haul.
Chain Grade Explained: G70, G80, and G100
Chain grade tells you tensile strength relative to the steel's cross-sectional area. Higher grade means higher working load limit at the same diameter — which matters when you are trying to keep weight down without giving up rated capacity.
Grade 70 (G70, Transport Chain) The standard for vehicle transport and cargo securement on flatbeds and car haulers. The yellow chromate finish makes it easy to identify in the field. A 5/16-inch G70 chain carries a working load limit of 4,700 lb — the DOT-recognized grade for tie-down applications under FMCSA regulations.
Grade 80 (G80) Alloy steel, heat-treated, and rated roughly 25 percent higher than G70 at the same diameter. Standard for overhead lifting and heavy rigging. Not the go-to for vehicle transport tie-downs, but relevant when you need higher SWL in a towing or recovery setup.
Grade 100 (G100) Higher capacity still. Used in lifting applications where weight savings matter. Less common in tow truck work, but worth knowing if your jobs cross into rigging territory.
One rule that does not bend: never substitute a lower-grade chain to match a fitting rated for a higher grade. The chain is only as strong as its weakest link — and that includes every hook and binder in the assembly.
Types of Tow Chains and When to Use Each
Transport Chains for Car Hauling
Transport chains are the backbone of any car hauler setup. They work alongside axle straps, frame hooks, and ratchet binders to secure vehicles to a flatbed or car hauler trailer.
G70 is the correct grade for this application. The 5/16-inch diameter hits the sweet spot between working load limit and manageability. Pair it with a ratchet-style load binder rated to match — not exceed — the chain's SWL.
A complete car tie-down system means the chain, binders, hooks, and axle straps all working together as a rated assembly. Vulcan's car hauler chains are spec'd for exactly this setup.
V-Bridle Chains
A V-bridle distributes load across two attachment points on the towed vehicle, reducing stress on any single connection. It is standard on wheel-lift tow trucks, running from the vehicle's axle or frame up to a single hook on the underlift.
Chain V-bridles hold up better than webbing in high-heat or abrasive environments. Webbing bridles are lighter and easier on finished surfaces. Know your application before you order.
Safety Chains
Safety chains are a legal requirement when towing a trailer or disabled vehicle. They are the last line of defense if a hitch fails. Cross them under the tongue in an X pattern with enough slack to allow turns without binding.
Spec them to meet or exceed the gross vehicle weight rating of whatever you are towing. A chain rated below the GVWR of the towed unit is not a safety chain — it is a liability.
Binder Chains with Load Binders
Binder chains work with load binders to secure heavy equipment, machinery, and oversized cargo on flatbeds. The chain runs over or around the load; the binder tensions it down.
Ratchet-style load binders give you more controlled tensioning than lever binders and eliminate the snap-back risk. A ratchet load binder rated at 7,100 lb SWL paired with 5/16-inch or 3/8-inch Grade 70 chain is a standard flatbed securement setup — one that covers most commercial cargo securement requirements under FMCSA rules.
How to Size a Tow Chain Correctly
Sizing comes down to three numbers: working load limit, chain diameter, and length.
Working Load Limit (WLL) Add up the weight of what you are securing. Your total chain SWL across all tie-down points needs to meet or exceed the cargo weight. FMCSA regulations specify minimum aggregate WLL requirements based on cargo weight — know the numbers before you haul.
Chain Diameter Common diameters for tow truck and transport work:
- 5/16 inch: standard for car hauler tie-downs, 4,700 lb SWL in G70
- 3/8 inch: heavier transport and flatbed work, higher SWL at the same grade
- 1/2 inch and up: heavy equipment, machinery, oversized loads
Match chain diameter to the hooks and binders you are running. A 3/8-inch chain through a 5/16-inch grab hook is a mismatch that drops the effective rating of the whole assembly.
Length Measure the actual run from anchor point to anchor point with enough extra to engage the binder or hook properly. Buying longer and shortening with a grab hook is fine. Buying short and stretching the setup is not.
Tow Chain vs. Tow Strap: Which One for Which Job
Both have a place on your truck. Neither replaces the other.
Use a tow chain when:
- You need rated, permanent securement for transport
- The environment involves heat, sharp edges, or abrasion
- DOT compliance requires a specific grade and WLL
- You are securing heavy equipment or machinery
Use a tow strap or recovery strap when:
- You are doing a dynamic recovery where stretch is an asset
- It is a one-time pull, not a transport securement
- Weight and packability matter
Recovery straps are built to absorb kinetic energy during a pull. Chains are not. Using a chain for a snatch recovery puts enormous shock load on both vehicles and the hardware. Use the right tool for the job.
Winch straps occupy a middle ground. A 4-inch by 35-foot winch strap rated 5,400 lb SWL works well for securing vehicles to a flatbed when you want the speed of a winch system over manual chain tensioning.
What to Look for When Buying Tow Chains in 2026
A few things separate professional-grade tow chains from gear that fails an inspection or drops a load.
Marked and rated hardware. Every link, hook, and binder in your securement system should carry a legible grade marking and SWL stamp. If you cannot read the rating, you cannot verify compliance — and that matters during a DOT roadside inspection as much as it matters when something goes wrong.
Matched components. Chain grade, hook rating, and binder rating need to align. A G70 chain with an unrated hook is not a G70 system. Buy components rated and sold as a matched set, or verify the specs individually before you put the rig together.
Corrosion resistance. Yellow chromate on G70 chain is standard. Check for consistent coating with no bare spots or surface rust on new hardware. Chains stored in wet conditions degrade faster — inspect regularly.
Reputable source. Consumer-grade chain sold without grade markings or working load limits has no place in professional transport or towing. The SWL on the box needs to be backed by the metallurgy of the chain, not just the label.
For operators who want everything in one order, Vulcan Brands carries tow chains, load binders, V-bridles, safety chains, and the full range of car tie-down hardware. Every order ships free with no minimum — which matters when you need one replacement chain fast and do not want to clear a $199 threshold just to get it delivered.
Frequently Asked Questions
What chain grade do I need for towing and vehicle transport? Grade 70 (G70) is the DOT-recognized standard for cargo securement and vehicle transport tie-downs. It carries a 4,700 lb SWL in 5/16-inch diameter. Grade 80 is used for overhead lifting and heavy rigging, not standard vehicle transport.
What is the working load limit of a 5/16-inch G70 tow chain? A 5/16-inch Grade 70 transport chain has a working load limit of 4,700 lb. Never load a chain beyond its rated SWL. Factor in the number of tie-down points and total cargo weight when calculating your securement system.
Can I use a tow chain for vehicle recovery? No. Chains are not designed to absorb the kinetic energy of a dynamic recovery pull. Use a recovery strap or snatch strap for vehicle recoveries. Chains are for static securement and transport — not shock-load applications.
What load binder should I pair with a 5/16-inch or 3/8-inch G70 chain? A ratchet-style load binder rated at 7,100 lb SWL and compatible with 5/16-inch or 3/8-inch Grade 70 chain is the standard pairing for flatbed and car hauler securement. Ratchet binders give you controlled tensioning without the snap-back risk of lever binders.
How many tie-down points do I need to secure a vehicle on a car hauler? FMCSA regulations require a minimum of four tie-down points for most passenger vehicles on a car hauler, with aggregate WLL meeting or exceeding the vehicle's weight. Check the specific regulations for the vehicle class you are hauling.
What is the difference between a V-bridle chain and a regular tow chain? A V-bridle splits the load across two attachment points, distributing stress more evenly than a single-point connection. It is standard on wheel-lift tow trucks. A regular tow chain runs as a single-line connection. Use the configuration that matches your equipment and the vehicle being towed.
How do I know if a tow chain is professional-grade? Look for a legible grade marking (G70, G80) and a stamped or printed working load limit on the chain and all attached hardware. Professional-grade chain meets ASTM or NACM standards and is sold with verifiable ratings. No markings means no rating — and no place on a professional rig.
The Bottom Line
Your tow chain is load-bearing hardware. Spec it to the job, match your components, and buy from a source that sells rated, marked gear with transparent working load limits.
Vulcan Brands carries tow chains, V-bridles, safety chains, load binders, and the full car tie-down system in one catalog. Every order ships free with no minimum. Browse the full catalog at vulcanbrands.com.