A receiver hitch is rated by class. The class tells you roughly how much trailer it can pull (gross trailer weight, or GTW), how much downward weight it can carry on the ball (tongue weight, or TW) and what size receiver opening it has. Picking the right class comes down to three numbers: what your vehicle is rated to tow, what you actually plan to pull, and what accessories (bike racks, cargo carriers) you want to use.
The short version: Class I and II hitches use a 1-1/4 inch receiver and suit cars and small crossovers. Class III is the most common hitch in the country and uses a 2 inch receiver. Class IV and V are for full-size and heavy-duty trucks pulling big campers, boats and equipment trailers.
Hitch classes at a glance
| Class | Typical max trailer weight | Typical max tongue weight | Receiver | Usually fits |
|---|---|---|---|---|
| Class I | Up to 2,000 lb | Up to 200 lb | 1-1/4" | Sedans, hatchbacks, small crossovers; bike racks |
| Class II | Up to 3,500 lb | Up to 350 lb | 1-1/4" | Midsize cars, crossovers, minivans |
| Class III | Up to 8,000 lb | Up to 800 lb | 2" | SUVs, minivans, half-ton pickups |
| Class IV | Up to 10,000 lb | Up to 1,000 lb | 2" | Full-size SUVs and pickups |
| Class V | 12,000 to 20,000 lb | 1,200 to 2,000+ lb | 2" or 2-1/2" | 3/4-ton and 1-ton trucks |
These are the industry-typical ceilings for each class. Every hitch carries its own rating on its label, and that number is the one that counts. Some Class III hitches are rated well under 8,000 lb because the vehicle they bolt to can't handle more, and some manufacturers rate a hitch higher when it's used with a weight-distribution system.
How to choose: the weakest link rule
Your real towing limit is the lowest rating in the whole chain: the vehicle, the hitch, the ball mount, the hitch ball and the trailer coupler. A Class IV hitch on a crossover rated to tow 3,500 lb is still a 3,500 lb setup.
- Start with your vehicle's tow rating. It's in the owner's manual or on the door-jamb sticker. Never exceed it.
- Weigh what you'll actually pull. Use the trailer's loaded weight, not the empty weight on the brochure. Boats add fuel, batteries and gear; campers add water, propane and everything you pack.
- Check tongue weight. A stable trailer puts about 10 to 15% of its weight on the hitch ball. A 5,000 lb camper means roughly 500 to 750 lb of tongue weight, so you need a hitch rated for at least that.
- Think about accessories. Most hitch bike racks and cargo carriers want a 2 inch receiver. If you'll ever run a two-bike e-bike rack, a Class III is the safe pick even if you never tow.
- Buy for your exact vehicle. Hitches are vehicle-specific. Year, body style, trim and options (hybrid, tow package, spare-tire location, exhaust) can change which hitch fits.
Standard, hidden and heavy-duty hitches
Standard receiver hitches (Draw-Tite, Blue Ox, Towsmart) have a visible cross tube under the bumper. They're the strongest and most affordable option for most vehicles.
Hidden hitches (EcoHitch, Draw-Tite Hidden Hitch) tuck the cross tube behind the bumper fascia so only the receiver shows, and some use a removable receiver. You pay more for the clean look; capacity is usually Class I to III.
Heavy-duty Class IV and V hitches (Acme, Blue Ox) are built for full-size trucks. Several are designed around factory lift gates or long and short bed frames, so match the bed and any lift-gate option exactly.
Most hitches bolt into existing frame holes with basic hand tools and a torque wrench. Some vehicles need a fascia trim or a small amount of drilling, which the instructions will show. Trailer wiring is usually sold separately.
What you need after the hitch
- Ball mount sized to your receiver (1-1/4" or 2") with the right rise or drop so the trailer rides level.
- Hitch ball that matches the trailer coupler (1-7/8", 2" or 2-5/16") and meets or beats your trailer weight. See our tow ball size guide.
- Hitch pin and clip, or a locking pin to keep your ball mount or bike rack from walking away.
- Trailer wiring: 4-pin for small utility trailers, 7-pin for campers and anything with electric brakes. See 4-pin vs 7-pin wiring.
- Brake controller for trailers with electric brakes (required in most states over 3,000 lb).
