A car license plate is not just a piece of metal with numbers, but an official document that identifies a vehicle on public roads. However, the thin steel from which the plates themselves are made is subject to deformation, corrosion and mechanical damage due to careless washing or parking. That is why many car owners are looking for a reliable solution to protect their state registration plate, and metal frames are becoming one of the most popular options.
Unlike cheap plastic analogues, metal products provide rigid fixation, eliminating vibration and rattling at high speeds. In addition, high-quality metal better resists temperature changes and aggressive reagents that are used to treat roads in winter. But when choosing such edging, it is important to take into account not only aesthetics, but also strict legal requirements in order to avoid fines.
In this article we will analyze in detail what materials are used in production, how models with hidden fasteners differ from standard options, and how to properly install the structure so that it lasts for many years. You will learn about the nuances of anti-corrosion treatment and understand what to look for when purchasing so as not to overpay for the brand.
Advantages of metal over plastic and other materials
When the question arises about choosing a frame for a state sign, the driver is faced with a wide range of materials. Plastic, silicone and metal are the main competitors in the market. However metal frames benefit from a number of technical parameters that are critical to the durability of the structure. The metal has high fracture strength, which is especially important in case of accidental impacts on curbs or snowdrifts.
Modern surface treatment technologies make it possible to create products that retain their original shine for years. Chromed or nickel-plated surfaces are practically not subject to fading under the influence of ultraviolet radiation, unlike painted plastic. This makes them an ideal choice for those who appreciate premium appearance your car.
In addition, metal provides more reliable fixation of bolts. Over time, the plastic may crack around the mounting hole, causing the number to play. The metal base holds the threads or screws much more securely, ensuring that the license plate does not fall off while driving.
It is also worth noting the environmental friendliness of the material. Metal is easily recyclable, which is becoming an increasingly important factor for conscious consumers. If you decide to change your car or style, you can scrap the old frame without harming the environment.
Types of metal frames: materials and coatings
The car accessories market offers several types of metals used for the production of license plate trims. Understanding the difference between them will help you make the right choice and avoid overpaying for unnecessary features. The main materials are stainless steel, aluminum and brass.
Stainless steel is the “gold standard” in this niche. It does not rust, has high strength and is heavier than aluminum, which adds solidity to the structure. Aluminum frames tend to be lighter and less expensive, but they often require additional varnish to protect against oxidation. Brass products are less common and are positioned as an exclusive accessory for retro cars or luxury models.
⚠️ Attention: Cheap metal frames made of ordinary iron with a thin galvanic coating will begin to rust after just one winter season. Be sure to check with the seller about the grade of steel or the availability of a certificate for the material.
By type of coating, chrome, nickel and blackening are the leaders. Chrome plating gives a mirror-like shine that goes well with chrome body elements (radiator grilles, moldings). Matte blackening (DLC coating or powder paint) is chosen by owners of cars in the "black edition" style or those who want to make the number less noticeable visually, but more secure.
An important aspect is the technology of connecting elements. High-quality frames are assembled by spot welding or have a monolithic design. If you see adhesive joints or cheap soldering, it is better to refuse such a purchase - it will not survive the first high-pressure wash.
GOST requirements and legality of using frames
The most important question that concerns every car owner: does a metal frame violate traffic rules? According to the current GOST R 50577-2013 and technical regulations, the installation of frames is allowed, but with serious restrictions. The main rule is: additional elements should not cover the numbers, letters or flag of the Russian Federation on the license plate.
Metal frames often made thicker than plastic ones, which creates a risk of overlapping edge characters. The traffic police inspector has every right to issue a fine if the edging covers at least part of the sign or interferes with the reading of data by automatic recording cameras. Particular attention should be paid to the upper part of the frame, where dealer logos or inscriptions are often located.
Below is a table showing the acceptable frame parameters according to technical standards:
| Parameter | Valid value | Risk of violation |
|---|---|---|
| Character overlap | 0 mm (disabled) | High |
| Frame height | No more than 12-14 mm (conditionally) | Medium |
| Availability of advertising | Allowed if not covered by GOST | Low |
| Material | Any non-glare | Low |
Separately, it is worth mentioning the (reflective) properties. The metal frame should not have its own backlight, simulating a license plate, or a mirror surface, which can blind other road users. Mirror chrome in rare cases, it can cause nitpicking if it creates glare on the camera lens.
When purchasing a metal frame, immediately try it on your license plate at home. Make sure that all numbers and letters, especially the outermost ones, are fully visible and not obscured by metal.
Types of fasteners: hidden and open mounting
The choice of mounting method affects not only the appearance, but also the safety of the license plate itself. There are two main types of installation: open and hidden fastener. In the first case, bolts or screws are screwed directly through the holes in the number and frame. This is the classic, most reliable and cheapest method, but it requires drilling the license plate itself.
Hidden fasteners (often called "Euro fasteners" or the "anti-theft" system) assume that the number is inserted inside the U-shaped profile of the frame and clamped with special screws from the sides or bottom, or fixed with latches. This allows you to avoid drilling the state number, which is especially important when replacing or re-registering it. However, metal frames with hidden fasteners are often thicker.
- 🔩 Open type: Requires 4 holes in the number, is extremely reliable, cheap, but spoils the appearance of the number when removed.
- 🔒 Concealed type (clamp): Does not require number drilling, is aesthetically pleasing, but can be more difficult to install and more expensive.
- 🛡️ Anti-vandal: Uses special security bolts that cannot be unscrewed with a regular screwdriver.
When choosing frames with hidden installation, pay attention to the presence of rubber seals inside the profile. Metal is metal, and without a gasket, moisture will accumulate between the frame and the license plate, causing corrosion on the back of the license plate. High-quality models are equipped silicone gaskets or have a special shape that drains water.
☑️ Check before purchasing frame
Instructions for installing a metal frame
Installing a metal structure requires more care than installing plastic, since the metal is harder and may have sharp edges. Before starting work, prepare the necessary tools: a Phillips screwdriver, a wrench (usually 10 mm), and possibly a drill if you choose an open type of fastening without ready-made holes.
The installation process begins with fitting. Attach the frame to the bumper and license plate. Make sure the mounting holes on the bumper line up with the holes in the frame. If you are using a model with hidden fasteners, first insert the number into the profile, check the fit and only then fix the structure to the car.
⚠️ Attention: Do not overtighten the metal frame mounting bolts! Excessive force can deform the thin metal of the license plate or even damage the plastic bumper at the mounting points.
To protect against corrosion, it is recommended to treat the inside of the frame and the back of the license plate with anti-corrosion agent or apply a thin layer of silicone grease. This will prevent galvanic corrosion, which occurs when two different metals come into contact in the presence of moisture.
What to do if the holes don't match?
If the holes on the bumper and in the frame do not match by a couple of millimeters, you can use oval washers or lightly drill out the holes in the frame itself (but not in the number plate!). If the misalignment is critical, an adapter plate or frame replacement will be required.
The final stage is installing decorative plugs on the bolts. This not only improves aesthetics, but also protects the thread from souring. It is recommended to check the tightness of the bolts a couple of weeks after installation, as vibrations can loosen the connection.
Care of metal elements and protection against corrosion
Even the highest quality stainless steel requires minimal care, especially in the Russian climate. Road reagents containing salts can work wonders, turning noble metal into rusty dust in one season. Therefore, regular car washing should include cleaning the license plate frames.
Use special metal polishes or regular car waxes. They create a thin protective film that repels dirt and water. Pay special attention to welding areas and inner corners, where moisture most often accumulates. If you notice the first signs of saffron marks, immediately sand them down with fine sandpaper and coat them with clear varnish.
In winter, when the roads are sprinkled with salt, try to wash off the plaque from the bottom of the bumper and frames at least once every two weeks. This will extend the life not only of the accessory, but also of the license plate itself, which may also suffer from an aggressive environment.
Regular treatment with wax or metal polish increases the service life of the frame by 2-3 times and maintains its presentable appearance.
Frequently asked questions (FAQ)
Is it possible to paint a metal frame in the body color?
Yes, metal frames can be painted. To do this, it is best to use powder painting in a specialized service, as it provides the most durable (long-lasting) coating. At home, you can use automotive enamels, but you must first thoroughly clean the surface and prime it.
Are frames with the inscription "Russia" and a flag on top legal?
According to current changes in legislation, the use of frames with the inscription “RUS” and the flag of the Russian Federation is allowed and even encouraged if they do not cover the main characters of the license plate. However, make sure that the metal frame you purchase is certified and complies with GOST.
How to remove a rusted bolt from a metal frame?
If the bolt is stuck, use a penetrating lubricant (such as WD-40) on the threads and let it sit for 15-20 minutes. If this does not help, you can carefully drill out the bolt head with a metal drill, being careful not to damage the bumper.
Does a metal frame affect the operation of traffic police cameras?
The metal frame itself does not affect the operation of the cameras if it does not cover the numbers and letters. However, glossy chrome-plated metal can produce glare, which in rare cases makes it difficult for automatic license plate recognition. Matte black or painted frames are safer in this regard.