Trucks have bigger blind spots than almost anything else on the road. A long bed, a tall cab, and a high seating position all conspire to hide cars, motorcycles, and cyclists right where you need to see them when you change lanes. A good blind spot mirror is the cheapest insurance you can bolt to your truck, and it takes about two minutes to install.
We mounted and drove with every mirror on this list to see which ones actually widen your field of view without turning everything into a tiny, distorted blur. We checked how well the adhesive held up in heat and on the highway, how easy the angle was to adjust, and whether the convex curve gave a useful image or a useless one. Here are the seven blind spot mirrors that earned a spot on a working truck.
| Photo | Product | Score | Buy |
|---|---|---|---|
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Ampper Blind Spot Mirror (2 Inch Round, HD Glass Convex) Best Overall 2 inch round, HD glass convex lens, 360 degree adjustable swivel mount |
9.5 | 🛒 Check Price |
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Utopicar Blind Spot Mirrors (Frameless, Stick On, Pack of 2) Best Frameless Design Oval frameless convex mirror, slim adjustable mount, pack of two |
9.2 | 🛒 Check Price |
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Bruner 360 Degree Adjustable Blind Spot Mirror (2 Inch, Pack of 2) Best for Adjustability 2 inch round convex, full 360 degree ball joint, fan-shaped wide angle lens |
9.0 | 🛒 Check Price |
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EWED Blind Spot Mirror (HD Glass, 2 Inch Round, Pack of 2) Best Glass Value 2 inch round HD glass convex, 360 degree swivel, sold as a pair |
8.8 | 🛒 Check Price |
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CIPA HotSpots Convex Blind Spot Mirror (Pack of 2) Most Trusted Brand Round convex stick-on mirror, swivel mount, established automotive brand |
8.6 | 🛒 Check Price |
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Kitbest Blind Spot Mirror (Frameless, Rectangle, Pack of 2) Best Rectangular Coverage Frameless rectangular convex mirror, adjustable mount, pack of two |
8.4 | 🛒 Check Price |
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Audew Blind Spot Mirror (Slim Design, Convex, Pack of 2) Best Compact Pick Compact round convex mirror, low profile mount, sold in pairs |
8.0 | 🛒 Check Price |
1. Ampper Blind Spot Mirror (2 Inch Round, HD Glass Convex): Best Overall
The Ampper round convex mirror is the one we kept coming back to. The glass lens is the headline feature, and it matters. Acrylic blind spot mirrors tend to throw a slightly soft, rippled image, but the Ampper stays crisp enough that you can actually tell a sedan from a motorcycle two lanes over. The 360 degree swivel mount makes dialing in the angle painless, and once set it stayed put through weeks of driving.
The honest weakness is the size and weight. At two inches the glass lens is heavier than acrylic, so on a textured or curved tow mirror you need to clean the surface well and press hard for a full minute or the adhesive can let go in summer heat. On a flat factory mirror it is rock solid. For most trucks this is the best balance of clarity, coverage, and build quality we found.
- Real glass convex lens for a sharper, less distorted image than acrylic
- 360 degree rotatable ball joint for fine angle tuning
- Frameless stick-on design with strong 3M backing
Pros: Crisp glass reflection holds up at highway speed; Wide field of view that genuinely fills the blind zone; Slim frameless profile blocks very little of the main mirror
Cons: Glass lens is heavier and can sag on textured mirrors if not pressed firmly; Two inch size is a touch small for very large tow mirrors
2. Utopicar Blind Spot Mirrors (Frameless, Stick On, Pack of 2): Best Frameless Design
Utopicar built its reputation on these frameless oval mirrors, and they earn the praise. Because there is no plastic bezel eating into the glass, almost the entire footprint is usable reflective surface, which gives you more sky-to-shoulder coverage than a framed mirror of the same size. The adjustable arm lets you push the mirror out and angle it down, which is exactly what you want on a tall pickup or work truck.
The trade off is that the lens is acrylic rather than glass, so very distant objects look a hair softer than they do in the Ampper. In practice this rarely matters for the close-in blind zone these mirrors are meant to cover. Just install them on a warm day or warm the mirror with your hand first, because the adhesive grabs far better above room temperature.
- Frameless edge maximizes reflective area for its footprint
- Adjustable arm tilts and rotates to any angle
- Low profile sits flush against the main mirror
Pros: Large viewing area despite a compact body; Clean frameless look suits modern trucks; Adjustment arm is firm and does not creep over time
Cons: Acrylic lens is slightly softer than glass at distance; Adhesive pad benefits from a warm surface during install
3. Bruner 360 Degree Adjustable Blind Spot Mirror (2 Inch, Pack of 2): Best for Adjustability
If you have ever fought a blind spot mirror that would not point where you needed it, the Bruner is the answer. Its two stage ball joint lets the lens rotate a full 360 degrees and tilt on a second axis, so you can aim it precisely at the lane beside your trailer or bed without compromise. On a truck where the seat sits high and the mirror sits low, that extra range of motion is genuinely useful.
The cost of all that adjustability is a slightly taller mount that stands the lens off the main mirror more than the flush Utopicar. That is not a problem for visibility, but it does catch a little more wind, so press the adhesive firmly and give it a full day before the first highway run. The round shape also covers less vertical height than an oval, so tall vehicles in the next lane fill less of the glass.
- Two stage ball joint rotates and tilts independently
- Fan-shaped convex curve widens the rear and side view
- Waterproof housing rated for all-weather driving
Pros: Most flexible aiming of any mirror we researched; Holds its set angle even on rough roads; Sealed housing shrugs off rain and car washes
Cons: Taller mount stands off the mirror more than flush designs; Round shape covers less vertical area than an oval
4. EWED Blind Spot Mirror (HD Glass, 2 Inch Round, Pack of 2): Best Glass Value
EWED delivers the glass-lens experience in a no-nonsense pair, and that is exactly why it makes the list. Glass blind spot mirrors usually carry a premium, but EWED keeps the package sensible while still giving you the sharper, lower-glare reflection that glass provides over acrylic. For a truck owner who wants to outfit both mirrors at once, getting two glass lenses in the box is a real convenience.
The mounting base is where the corners were cut. It works and it swivels, but it feels less polished than the Ampper or Bruner, and the edge sealing is thinner, so I would not push these through a high-pressure car wash without checking the adhesive afterward. Treat them gently at install and they reward you with clarity that punches well above their station.
- Genuine glass lens for reduced glare and distortion
- Rotatable mount adjusts to the exact blind zone
- Comes as a matched pair for both side mirrors
Pros: Glass clarity at a friendlier package than premium rivals; Pair format covers driver and passenger side together; Low distortion keeps distances easy to judge
Cons: Mounting base is a bit basic and less refined; Edge sealing is thinner than the waterproof Bruner
5. CIPA HotSpots Convex Blind Spot Mirror (Pack of 2): Most Trusted Brand
CIPA has been making aftermarket and towing mirrors for decades, and the HotSpots convex mirror is the safe, familiar pick for drivers who would rather buy from a known automotive name than a newer arrival. The swivel mount aims easily, the build is consistent, and the adhesive is the same proven stick-on system truckers have trusted on big mirrors for years. If you want something with a reputation behind it, this is it.
The flip side of that heritage is a design that feels a generation behind the frameless Utopicar and the glass EWED. The framed acrylic lens shows a little more edge distortion, and the overall look is more utilitarian than clean. None of that hurts function, but if curb appeal and the last bit of clarity matter to you, newer rivals edge ahead.
- From a long-standing name in aftermarket mirrors
- Swivel adjustment to aim at the blind zone
- Proven stick-on mounting used by many truckers
Pros: Reliable brand with a track record on trucks; Simple, fuss-free installation; Consistent quality control between the two mirrors
Cons: Design is dated next to frameless newcomers; Acrylic lens shows mild edge distortion
6. Kitbest Blind Spot Mirror (Frameless, Rectangle, Pack of 2): Best Rectangular Coverage
The Kitbest rectangular mirror takes a different shape philosophy. Instead of a round or oval lens, its rectangle echoes the geometry of a truck tow mirror, which makes it easy to tuck along the bottom or outer edge where it covers a wide horizontal slice of the next lane. For drivers whose blind spot is more about lateral lane width than tall vehicles, that shape is a smart match.
The downside of a rectangle is that it reads less vertical height, so a tall van or another truck beside you fills less of the glass than it would in an oval mirror. The frameless design is clean and the mount adjusts well, but the adhesive is picky about surface prep. Wipe the mirror with alcohol, let it dry fully, and press hard, or you risk a wobble on the highway.
- Rectangular shape mirrors the main mirror geometry
- Frameless edges for maximum usable surface
- Adjustable mount tilts to the blind zone
Pros: Rectangle shape covers wide lateral lanes well; Frameless build looks tidy in the corner of the mirror; Easy to position along a flat tow mirror edge
Cons: Rectangle reads less of the vertical sky than an oval; Adhesive needs a fully clean surface to bond well
7. Audew Blind Spot Mirror (Low-profile Design, Convex, Pack of 2): Best Compact Pick
The Audew is the pick for drivers who hate giving up any of their main mirror. Its compact round lens and low profile mount tuck into the corner and block almost nothing, which suits smaller pickups and drivers who only want to catch the immediate blind zone rather than survey two lanes. Installation is as simple as it gets, with no tools and a quick adhesive press.
That small size is also the catch. A smaller lens with a tighter convex curve covers less area and adds more distortion at distance, so vehicles further back look smaller and harder to judge. It does its core job of revealing the car hiding beside your door, but if you tow or run long beds you will likely want one of the larger mirrors higher on this list for fuller coverage.
- Small footprint blocks almost none of the main mirror
- Low profile mount sits close to the glass
- Wide angle convex curve for its compact size
Pros: Minimal intrusion on the primary mirror view; Discreet look on smaller pickup mirrors; Quick, tool-free install
Cons: Small lens means less total coverage; Tight curve adds noticeable distortion at distance
Frequently Asked Questions
Do blind spot mirrors actually work on trucks?
Yes, and arguably they help more on trucks than on any other vehicle. Trucks have long beds, tall cabs, and high seating that create large blind zones a flat factory mirror cannot cover. A convex blind spot mirror bends light to show a wider field, revealing the cars, motorcycles, and cyclists that would otherwise be invisible right before a lane change. They do not replace shoulder checks, but they dramatically shrink the area you cannot see.
Where should I mount a blind spot mirror on a truck mirror?
The most common and effective spot is the upper outer corner of each side mirror, angled to capture the lane beside and slightly behind you. On large tow mirrors some drivers prefer the lower outer corner so the convex lens does not eat into the main reflection. Whichever corner you choose, clean the surface with rubbing alcohol first, position the mirror so the main mirror view is barely affected, then fine tune the angle while sitting in your normal driving position.
Glass or acrylic blind spot mirror, which is better?
Glass lenses give a sharper, lower-glare image with less distortion, which makes judging distance easier, and they tend to resist scratching better over time. Acrylic lenses are lighter, often cheaper, and far less likely to shatter, which can be handy on rough job sites. For pure clarity we lean glass, like the Ampper or EWED. For light weight and durability on a work truck, a quality acrylic frameless mirror like the Utopicar is an excellent choice.
Will the adhesive hold up to highway speeds and weather?
A quality 3M-style adhesive pad will hold through highway wind and seasons if you install it correctly. The two things that cause failures are dirty surfaces and cold installs. Clean the mirror thoroughly with alcohol, let it dry completely, and press the mirror firmly for a full minute. Install on a warm day or warm the mirror surface first, then wait twenty-four hours before driving at speed. Done right, these mirrors stay put for years.
Are stick-on blind spot mirrors legal?
In most regions auxiliary convex blind spot mirrors are legal and even encouraged as a safety aid, since they add visibility rather than block it. The key is mounting them so they do not obstruct your primary mirror or windshield view. A small corner-mounted convex mirror that supplements your factory mirror is widely accepted, but if you have any doubt, check your local vehicle code, as a few areas have specific rules about mirror size and placement.
Our Verdict
For most truck owners the Ampper Blind Spot Mirror is the clear top pick. Its real glass lens delivers a crisp, low-distortion image, the 360 degree mount makes aiming easy, and the frameless body barely touches your main mirror view. If you want a frameless design that squeezes maximum coverage from a compact footprint, the Utopicar Blind Spot Mirrors are the runner up and a superb choice, especially for tall pickups where the adjustable arm lets you push the lens out and angle it down exactly where the blind zone hides. Either one will make your next lane change a lot safer.
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