2" x 2" trailer hitch receivers are the most common type. Most 2" hitches are either Class III or Class IV. These hitches are typically found on pickup trucks, SUVs, and some full-size sedans. Most trucks and SUVs that come factory-equipped with a trailer hitch have a 2" receiver.
Do I have a Class 3 or 4 hitch?
The main difference between a Class III hitch and a Class IV hitch is the capacities they set for the hitches. Class III hitches are rated for up to 6,000 lbs GTW with 600 lbs TW whereas a Class IV is rated for up to 12,000 lbs GTW and 1,000 TW.
What size hitch mount do I need?
The best way to measure your receiver hitch tube is to measure inside of the tube to inside of the tube. This will help you know what size ball mount you need to get for your hitch. It may be 1-1/4″ common on cars and cuvs. Most likely it is either a 2″ or 2-1/2″, which is often found on most SUV and pickup trucks.