19. Air Springs/Helper SpringsMaxed-out springs are an invitation to disaster when you are towing a trailer. If your stock springs can't handle the weight you need to carry, then supplemental helper springs or air springs should be on your shopping list. They are installed between your truck's frame and leaf springs to provide additional suspension capacity, and they keep the stock parts in their optimum operating range.
20. Tires with High Load CapacityGo check your tire sidewalls. The number after the wheel rim size, such as LT245/75Rx17E, is the load range rating. On some tires, it is listed separately from the size. It refers to how much horizontal stress can be put on your tires-a critical measurement for trailer towing due to the lateral loads that come into play when a trailer attempts to wander. Your tow rig should be equipped with at least "E" load rated tires or higher ("D" rated tires may not be strong enough). Make sure to check the pressure required for your set because high load rated tires often require more pressure than standard light truck models.
21. Auxiliary Fuel TankTowing a trailer will lower your fuel economy, which means you'll have to stop more often to fill your tank. One way to stay on the road during long hauls is to have more fuel at your disposal. An auxiliary fuel tank is a simple way to add more range between fill-ups.
22. Towing Mirrors and Video Backup CameraWhat good is having a big trailer, if you can't see what it's doing? When ordering a tow rig, make sure to get the trailer mirrors. Some of the best features include power extending/telescoping functions, heated glass, clearance lights, auto-dimming for bright headlights, and integrated turn signals to make sure other drivers stay out of your way. If you already have a truck equipped with small mirrors, you can order units with similar features from aftermarket suppliers. Beyond that, automotive video systems are becoming more common and less expensive. They are great for keeping an eye on what's behind your trailer and can be very helpful when you are navigating parking lots.
23. Dual Rear WheelsIf four wheels are good, then six must be better, right? When it comes to towing a trailer, it's hard to argue against having more load capacity, better contact with the road, and improved traction. If your truck is struggling to maintain stability while towing, you may need to start shopping for a dualie, especially if your trailer is large enough to require a gooseneck or fifth-wheel hitch.
24. Longbed OptionAnother thing to consider when ordering a heavy-duty truck is the distance between the cab and the rear axle. The more space you have, the better leverage your truck will have while towing, plus there is less of a chance the trailer will come into contact with the cab when you are towing a fifth wheel. So, choose the 8-foot box and you should have a more stable towing platform.
25. Regular Cab 2WD Weight SavingsTo get the maximum trailer weight capacity straight from the factory, you have to order the lightest diesel truck. Two-wheel-drive pickups with the standard cab don't have to carry around the extra weight of a transfer case, front drive parts, or the back seating area, so they can tow that much more weight. If your truck stays on-road, you don't need extra passenger room, and want to tow a large trailer, then a regular cab two-wheel-drive dualie may be your best choice.