Will It Tow?
2026 Ram 3500 (6.7L Cummins I6 turbo diesel) with the 2026 Coachmen Catalina Summit Series 7 134RDX at its full GVWR of 3,950 lb, two adults and a dog aboard and a weight-distribution hitch.
Closest: payload, at 33% of its limit.
- Tow rating: 19,050 lb to spare (3,950 lb camper, rating 23,000 lb)
- Payload: 2,668 lb to spare (1,184 to 1,303 lb used, payload 3,970 to 4,400 lb)
- Truck and trailer together: Not sure yet (12,430 lb, GCWR up to 34,000 lb)
Check it with your own numbers- Weight-distribution hitch (needed): Your camper is putting over 500 lb on the hitch. Most truck makers require weight distribution here, and many receivers are rated far lower without it. It spreads the tongue weight to your front axle and the camper's axles, so the truck sits level and steers right.
- Sway control (strongly recommended): It stops the camper swinging side to side in crosswinds, when semis pass and on rough roads. Many weight-distribution hitches have it built in.
- Spring bars rated about 500 to 900 lb (size): Match the bars to your loaded tongue weight (474 to 593 lb, from an estimate of 12 to 15% of the camper's weight) plus anything heavy behind the truck's rear axle. Bars that are too stiff ride rough. Too light won't level the rig.
- Brake controller (needed): Your camper has electric brakes, and the controller in your cab runs them. Many newer trucks have one built in.
- Measure your tongue weight (tip): We're estimating 474 to 593 lb. A tongue weight scale or a hitch with a built-in gauge gives you the real number. Enter it in step 2.
Hitches make towing steadier, but none of them raise your tow rating or payload. The hitch itself counts against payload.
Ratings come from manufacturer towing guides and spec sheets. These are planning estimates, not a safety guarantee. Your truck and camper stickers, your owner's manual and a scale always win.