If you think of aerodynamic vehicles the first thing that probably comes to mind are sports cars, race cars and maybe even military jets. It’s not likely that an RV will be included in your list…until today!
How you make an RV more aerodynamic is by reducing the amount of wind resistance your RV has. The best way to do this is by adding smooth, curved pieces of plastic over top of things that stick out of the RV exterior. You can even add some things to the towing vehicle to help with aerodynamics. These products will greatly improve your RV’s aerodynamics:
- RV Wind Deflector
- Tow Guard for Motorhomez
- All-Weather Roof Vent Cover
- Roof Vent Replacement Cover
- Vortex Generators
- Range Vent Cover
- Aerodynamic RV TV Antenna
- Low-Profile Clip-On Towing Mirror
Unfortunately, the only way to make RVs (or anything else) more aerodynamic is to either take things off the exterior or make it so the things on the exterior that you can’t take off let the air flow over them more easily.
In the vast majority of cases, you don’t want to be taking things off the exterior of your RV because all of those attachments and vents serve important purposes.
So we’re left with looking for ways to reduce the amount of drag the exterior protrusions generate. And oddly enough, we do that by attaching more things to the exterior.
Through research and experience I’ve gathered 8 products that will help you make your rig more aerodynamic.
Table of Contents
The RV wind deflector is installed on top of the vehicle that is towing the RV. Instead of the air flowing over the roof as it normally does, the deflector makes the air flow upwards towards the top of the RV. When the air starts flowing from the towing vehicles roof, over the deflector and smoothly to the top of the RV the turbulence is drastically reduced.
Less turbulence means more aerodynamics and more fuel efficiency.
Without the RV wind deflector, the front of the RV is like a wall that the air crashes into. Pulling a “wall” down the road like that is the least efficient thing you can do.
It seems unbelievable, but turbulence under your towing vehicle and under your RV or motorhome can cause inefficiency. A tow guard can reduce that turbulence, making you more fuel efficient.
You probably think of a tow guard just as just a rubber flap that protects your RV and vehicles behind you from flying pebbles. Although it does that job well, it also does the job of turbulence reduction well.
A tow guard for motorhomes is a great investment. Check prices, customer reviews and other specifications click here.
Your RV roof vents stick out from the top of your RV. You may have one or multiple and they may not be very aerodynamic.
Every time something interrupts the flow of air over your vehicle, drag is increased and fuel efficiency is decreased.
This all-weather RV roof vent cover sticks up higher than your regular vents, but it has a smooth, rounded top that lets the air move over the top more easily.
It has the added benefit of allowing you to keep your vent open, even when you’re driving.
It will also prevent rain from getting into your roof vent when you’re camping, so you can keep your vents open at all times if you want to.
Sun also gets in as long as it’s at just the right angle.
An all-weather RV roof vent cover is a great investment. Check prices, customer reviews and other specifications click here.
If you don’t want a large all-weather vent cover, you can replace your vent lids with sleeker, more aerodynamic ones.
These ones have a very low profile meaning the air flows more easily over them compared to the vent lids that most RV’s ship with.
If you’re looking at all your options for maximizing your aerodynamics definitely check these out.
An aerodynamic vent lid replacement is a great investment. Check prices, customer reviews and other specifications click here.
Vortex Generator – RASNONE Spoiler Roof Wing, Air Vortex Generator Diffuser Shark Fin Universal 10pcs Kit Black
These are borrowed from the world of racing. The science behind this is pretty complex, but in short, they make your RV and your vehicle more efficient.
They look like small shark fins that you attach in a row across the trailing edge of a surface you want to make more aerodynamic.
Without these puppies, the air flows over the end of your RV and immediately curls in behind it causing turbulence directly behind your RV. Believe it or not, the turbulence behind your RV can slow you down and make your less fuel efficient.
The vortex generators prevent the air from curling around the back of the RV and instead make it flow smoothly off the back of your rig.
On an RV you often see a row of these up the sides of the RV at the back edges and on the roof at the back edge.
Vortex generators work most efficiently at directing the air at high speeds. So you won’t see much benefit when driving around town, but when you’ll see aerodynamic improvements at highway speeds.
A set of vortex generators is a great investment. Check prices, customer reviews and other specifications click here.
Although the range vent is a pretty small protrusion from your RV, adding a slim, smooth cover will reduce disturbance for the flowing air.
Every little bit counts when it comes to making your RV as efficient as possible.
A range vent cover is a great investment. Check prices, customer reviews and other specifications click here.
Slim and Sleek RV Antenna – Winegard RZ-6000 Rayzar z1 RV TV Antenna (HD, Digital, 4K Ready, ATSC 3.0 Ready) – White
If you still have the budget RV antenna that most manufacturers put on their RVs, then this upgrade will help you in two ways.
Having a strong antenna means you’ll enjoy better reception which should result in a clearer picture.
And this antenna is designed with aerodynamics in mind.
A slim RV antenna is a great investment. Check prices, customer reviews and other specifications click here.
Low-Profile Clip-on Towing Mirror – CIPA 11950 Universal Clip-On Towing Mirror Black & Silver, 15.75 Inch
When it comes to side-view mirror extensions, you can get big honking ones or low-profile ones. The ones with a low-profile will cause less air disturbance and less drag and will therefore be more fuel efficient.
You might think you don’t need a towing mirror and you’d be wrong. The extra visibility they provide helps you be safer on the road.
The only time you don’t need a towing mirror is when you’re towing something small like a droplet trailer or a tent trailer.
A low-profile clip-on towing mirror is a great investment. Check prices, customer reviews and other specifications click here.