Towing a trailer changes how your vehicle handles and how much you can see behind you. Standard side mirrors often leave large blind spots, making lane changes and backing up risky. Proper towing mirrors give you the visibility you need to drive confidently and avoid accidents. Here’s how to set them up and use them correctly.
Why Standard Mirrors Aren’t Enough
When you hitch up a trailer, your vehicle’s rear visibility drops dramatically. The trailer blocks your rearview mirror, and your factory side mirrors may only show the sides of the trailer, not the road behind it. This creates dangerous blind spots where cars, cyclists, or pedestrians can disappear.
Towing mirrors extend your field of view so you can see down the sides of the trailer and spot traffic behind you. They also help you judge the trailer’s position when changing lanes or turning. Without them, you’re essentially driving with partial vision, which increases the risk of side swipes and collisions.
Types of Towing Mirrors
There are two main styles: temporary clip-on mirrors and permanent replacement mirrors. Clip-ons attach to your existing mirrors and are easy to remove when not towing. They’re affordable and work well for occasional towers. Replacement mirrors bolt on in place of your factory mirrors and often include power adjustment or heated glass. They’re more stable and provide a cleaner look.
Choose a style that fits your vehicle and towing frequency. If you tow monthly or less, clip-ons may be all you need. For weekly or full time use, consider permanent mirrors for better stability and visibility. Make sure any mirror you pick meets your state’s minimum size requirements for towing mirrors.
How to Aim and Adjust Towing Mirrors
Start with your vehicle on level ground and the trailer connected. Adjust the driver side mirror first. Sit in your normal driving position and lean slightly to the left so your head touches the window. Set the mirror so you can see the side of the trailer and the lane behind it. Then lean back to the center and adjust the mirror until you see the trailer’s edge. This gives you a wide view of the blind spot.
For the passenger side, lean to the right toward the center console, then set the mirror to see the trailer side and the road behind. Finally, lean back and refine the angle so you have a clear view down the trailer’s side. The goal is to eliminate any gap between your peripheral vision and the mirror’s coverage.
If your towing mirrors have a convex lower section, use that for a wider view of the road close to the trailer. The flat upper section is for distance. Test the setup by having someone walk around the trailer while you watch in the mirrors. You should see them from the rear corner to the front of the trailer without a break.
Using Towing Mirrors While Driving
Before changing lanes, check the towing mirror on that side, then glance over your shoulder to confirm. The mirrors may show a vehicle clearly, but your blind spot could still hide a small car. Make a habit of using both the mirror and a shoulder check every time.
When backing up, towing mirrors give you a reference for the trailer’s position. Look for the trailer tires in the mirror to know which way they’re turning. If you lose sight of the tires, stop and recheck. Practice in an empty lot before hitting busy roads.
At night, towing mirrors help you see headlights behind you, but they can also create glare. Use the dimming feature if your mirrors have one, or adjust the angle slightly to reduce reflected light. Keep the mirrors clean for best visibility.
Legal Requirements and Safety Checks
Most states require that you can see at least 200 feet behind your trailer. If your factory mirrors don’t provide that view, you need towing mirrors that extend outward. Check your local laws to confirm the exact requirements, as they vary.
Before each trip, inspect your towing mirrors for cracks, loose mounts, or missing pieces. A damaged mirror can vibrate and become useless at highway speeds. Make sure clip-ons are tight and won’t fly off. For permanent mirrors, check the mounting bolts periodically.
Remember that towing mirrors stick out beyond your vehicle’s width, so be cautious in tight spaces, drive throughs, or when passing close to objects. Fold them in when you’re not towing, if possible, to protect them from damage.
With the right towing mirrors and proper adjustment, you’ll see more and drive safer. Take time to set them up correctly before every trip, and practice using them so they become second nature. Your visibility, and your safety, depend on it.
Frequently Asked Questions
Do I need towing mirrors for a small trailer?
Yes, if your standard mirrors can't give you at least 200 feet of visibility down the trailer's side. Even a small trailer can block your view, so towing mirrors are a smart safety upgrade.
Can I use clip-on towing mirrors with power mirrors?
Yes, clip-on mirrors are designed to fit over most factory mirrors, including power and heated ones. Just make sure you attach them securely and follow the adjustment steps to avoid blind spots.
How often should I adjust my towing mirrors?
Adjust them every time you hitch up a different trailer or change vehicles. Once you're on the road, check them after a few miles to see if vibration or load shifts have changed their position.
