However there's another system in play here. You might discover one of the letters of the alphabet on your tire, say D or E and so forth. Since D is the fourth letter, you multiply 4 by2 to seek out that a D load rated tire is equal to a eight ply tire,. Base Plate: Customized on your tow car, it attaches the tow bar. Braking System: Essential for security, it synchronizes the towed vehicle’s brakes with the RV. Safety Cables: Backup if the tow bar fails. Wiring Harness: Integrates lights and alerts. Without these, you threat injury and accidents. Choosing the right automobile is important. It’s not nearly towing capacity—though that’s critical—but additionally warranties and manuals