Are you ready to head out on the highway in your RV but are struggling to figure out which is the best way to tow your BMW? We're here to help with some of the best options and accessories you'll need to safely tow your BMW for your cross country adventures.

Touring the country in your RV doesn't mean that you're stuck driving your house every time you want to visit the twisty roads of a park, head into town for supplies, or find some back roads to explore for an afternoon. Plenty of people tow their car or truck behind their RV. It's called a dinghy, like the small boat used to get to shore from a larger boat or ship, and while you might often see Hondas and Jeeps towed this way, there's no reason you can't bring your BMW along on your vacation. So, here's how to tow your BMW and some accessories to help make it easier.

One of the common ways to tow behind your RV is called flat towing. That's where the dinghy (the vehicle being towed) is sitting with all four wheels on the pavement, attached with a tow bar that bolts to the frame of the dinghy and then attaches to the trailer hitch of the RV. No, you can't use the small tow hook that screws into the bumper for this, it's designed for emergency use only.

Many modern BMW models cannot be flat towed, especially xDrive all-wheel drive vehicles. The transfer cases and automatic transmissions can't handle it, because they aren't properly lubricated while in motion. When in doubt, check your owner's manual, because BMW makes it crystal clear for your vehicle in there. Older models, like an E36 BMW 3 Series, let you tow flat when equipped with a manual transmission. For those vehicles, direct fit tow bars are no longer made, so a universal adjustable tow bar like this one from Blue Ox do the job.

1. Blue OX 7420 Motorhome Mounted Tow Bar


The Blue Ox BX7420 Adjustable Tow Bar can have the legs spread to fit to the base plate of nearly every car. You'll need to have a base plate fabricated for your vehicle, or find an old stock part, but a trailer or RV store should be able to do the fabrication and installation. Weighing just 45 lbs. for easy use and transport, it can tow vehicles up to 10,000 lbs. Pins attach it quickly and securely to your vehicle's base plates. What's even better about this tow bar is the easy fold away feature that allows you to stow the tow bar away while hitched to your RV.


2. Demco Kar Kaddy Tow Dolly
A more common way to tow your BMW behind an RV is with a tow dolly. This is a small cart that lifts the front axle off of the ground, letting you transport without some of the worries of flat towing, but without all of the compromises of a large flat car trailer. Most front-wheel drive BMWs can be towed on a dolly, and, sounding like a broken record, check your manual for your exact requirements. But hey, you're a BMW owner, you're used to part numbers that change based on production month, so this is nothing new. While you can tow a rear-wheel drive BMW on a dolly, in most instances it's not recommended unless you disconnect the driveshaft.


This Demco Kar Kaddy tow dolly can transport vehicles up to 4,800 lbs, which covers most BMW models. All you need to do is drive on, strap your vehicle down, and then go, able to handle vehicles with a tread as wide as 76-inches. It's also designed to fold up when you're not towing the car, so it takes up less space in your camping lot. It has hydraulic surge brakes so you can stop your vehicle combination safely, while the wheel hubs have a three-year unlimited-mile warranty for durability. It also has a "steerable" axle, giving you a tighter turning circle making it easier on your BMW as well.


The last way to tow is on a full-length car trailer. This is a trailer much like a flatbed, that you drive your BMW onto and off of. It's the largest solution, and the most expensive, but it's also the easiest. You don't need to worry about forgetting to put your BMW in neutral or leaving the key off, you just need to strap it down. It's also the heaviest option, especially if choosing a more affordable steel trailer over aluminum. Because a trailer can't normally be shipped, this is something you'll want to find locally.

You will need some accessories, no matter how you plan on towing, to make sure your experience goes well.

3. Curt Universal Towed Vehicle Wiring Harness

First up, if you plan on dinghy towing, you'll need lights for your BMW to give it turn signals and brake lights as well as running lights. This universal wiring harness from trailer experts Curt uses a standard four-pin trailer connection to your RV, then has all of the wiring you need to splice into your factory wiring for the rear lights. While it has diodes to protect your vehicle's electrical system, and each wire is labelled, professional installation is suggested.


4. Vulcan Wireless Towing and Trailer Light Kit
An alternative solution is modern LED wireless lights. These Vulcan wireless towing and trailer lights mount to your BMW using magnets as well as suction cups, attaching firmly to the rear of your vehicle. The waterproof lights use a transmitter that attaches to a standard seven-pin trailer wiring connection that is part of the kit. While they are wireless, the lights offer a 100-foot range and an eight-hour battery life. Charging is quick and easy through a USB connection and both can be charged at the same time in around two hours.


These lights can be used with your flat tow or your dolly for more visibility, since dolly lights located on the side of your vehicle can be tough to see for other drivers.


5. Rock Solid Gravel Guard


Another great towing accessory for your BMW is a rock guard like this Rock Solid guard from Smart Solutions Have you ever followed too closely to another truck and gotten some gravel in the windshield? Imagine doing that from coast to coast and it's easy to see how your vehicle could take serious damage. This two-piece guard shields your towed BMW from rocks, gravel, oil, tar, and all of the other debris that's normally kicked up behind your RV. It's adjustable to fit your RV and offers cheap protection for your vehicle to protect its paint and glass.


6. Trekassy Wheel Straps


Whatever trailer you use, strapping your BMW down securely is essential if you don't want it to come off of your trailer at the worst possible time. Not that there's a good time, other than when you're backing it off at the end of the day. These wheel net straps from Trekassy are designed to each be able to handle a working load of 3,333 lbs. and a have a break strength of 10,000 lbs. They drape over your BMW's tires and then attach to ratchet straps to keep your car tightly fastened to the dolly or trailer. The set also includes axle straps, if you're not able to get tire straps into the fender openings, that can be used to keep that BMW planted. The straps are non-abrasive to protect your wheel finish and have anti-abrasion pads for longer life.


8. UWS Aluminum Trailer Storage Box


Need a safe and secure place to store your towing accessories, like the hitch mount, ball, straps, and even a tire inflator? Check out a locking trailer tongue toolbox like this one from UWS. It's made from heavy-wall aluminum for strength, diamond-turned for good looks. Fastening to the trailer tongue, it doesn't take up space where your car would be, but it does give you loads of extra storage. Self-supporting lid struts making use easy, and it locks for added security, attaching to the tongue from inside. It can even add some piece of mind and help prevent your BMW from striking your RV in case you forgot the straps and need to slow down quickly.


Whenever you're towing your BMW, there are some important things to remember. Like checking your lights and trailer lights to make sure that your brake lights and signals are working. If you have a trailer brake controller, use the test function to make sure that your trailer brakes are working before you need them to work, and to make sure your brake controller is properly adjusted.

If you're towing your BMW on a dolly, make sure that if the wheels touching the ground are driven, that your manual says it's ok, and that the vehicle is in neutral. Towing with the road wheels in gear is a quick and easy way to expensive mayhem. The same goes if you're flat towing.

Towing with a trailer? Leave the vehicle in gear or in Park as a last-step safety measure. Make sure the vehicle is strapped securely to the trailer using proper tie-downs that are rated for the weight of a vehicle like the ones we've shown above. Make sure that they're attached to proper and secure places on your vehicle and the trailer, and re-check to make sure the straps are secure after a few minutes of driving. They can easily come loose as the straps initially stretch.

Last tip? Don't forget you're towing your BMW behind you. Check your mirrors, allow wider turns, and if something doesn't feel right then stop and check it out.

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