Robert Pepper - automotive journalist - I get asked a lot about tow cars...so here's some guidance. - few car/trailer combinations are efficient or safe at maximum weights - trailer weights are
Towing Capacity and Trailer Weight – What RV Owners Need to Know
How to calculate the towing capacity of your vehicle. - ABC Motor Engineers
Boat Towing Weight Calculator - Calculator Academy
Towing Capacity Guide: Everything You Need to Know - Kelley Blue Book
How to Find Your Trucks Towing Capacity by VIN Number
How to Measure Towing Capacity, GVWR, GCWR - Towing 101
Al's RV Projects and Resources- Calculating Towing Limits.