Operating a passenger car often requires expanding its functionality, especially when it comes to transporting large or heavy loads. In such situations, an additional towing device comes to the rescue, and one of the most popular solutions on the Russian market is Tonar trailers. These designs have proven themselves to be reliable assistants for summer residents, builders and tourists, allowing them to transport materials, equipment or equipment without damaging the car’s interior.
The domestic production of trailers has come a long way in evolution, and today the brand Tonar offers a wide range of models adapted to different needs. From simple single-axle trucks to complex dual-axle trucks, the choice of a particular truck depends on a variety of factors, including payload, body type and road conditions. Understanding the technical nuances will help you avoid mistakes when purchasing and subsequent use.
In this article we will analyze in detail the model range, design features and legal aspects of using trailers. You will learn how to choose the right device for your car, what to look for during inspection, and how to extend the life of the chassis. A competent approach to choosing equipment is the key to a safe and comfortable trip.
Overview of the model range and technical features
The product line for passenger cars is represented by many modifications, each of which has its own unique characteristics. Basic models such as Tonar 8213, are often equipped with classic sides and an awning, which makes them universal for transporting building materials or garden tools. More powerful versions may have a reinforced frame and spring suspension that can withstand significant static and dynamic loads.
Particular attention should be paid to two-axle options, which provide better stability on the highway. Series models 82131 or 82135 often chosen by those who need to transport ATVs, snowmobiles or heavy construction equipment. Having two axles distributes the weight of the load more evenly, reducing stress on the vehicle's towbar and increasing stability when driving at high speeds.
Structurally, trailers consist of a frame made of profile pipe, sides made of sheet steel or aluminum, and a chassis. An important element is drawbar, which can be straight or A-shaped. The A-frame drawbar provides better maneuverability and stability, although it takes up more storage space. It is also worth noting the presence of a support wheel, which greatly simplifies parking and docking with a tow bar.
Hidden Frame Features
The frame of many modern models is hot-dip galvanized, which significantly increases corrosion resistance compared to conventional painting. This is critical for regions with a humid climate and the use of reagents on roads.
Types of bodies and their purpose
The choice of body type directly affects the functionality of the trailer in specific operating conditions. Standard sides are suitable for most household tasks, but for bulk cargo such as sand, crushed stone or soil, the ideal solution is dump platform. The tipping mechanism can be manual or hydraulic, which greatly facilitates unloading without the need for manual shoveling.
For transporting equipment or cargo sensitive to precipitation, models with a hard top or kung are indispensable. These options are often called vans or booths. They provide complete sealing of the internal space, protecting the contents from dust, moisture and theft. Some modifications include windows and internal lining, which allows the trailer to be used even for temporary accommodation of people or animals.
There are also specialized platforms with ramps for loading motorcycles. The low landing of the platform and the presence of ladders make the process of loading an ATV or snowmobile as safe and fast as possible.
- 🚛 Flatbed trailer: a classic solution for construction sites and summer cottages, often equipped with an awning.
- 🏗️ Dump truck: equipped with a tipping mechanism for quick unloading of bulk materials.
- 🏠 Van/Kung: Sealed body to protect valuable cargo from weather and prying eyes.
- 🏍️ Platform for equipment: low center of gravity and loading ramps for motorcycles and snowmobiles.
Chassis and suspension: springs or torsion bar?
One of the key elements of comfort and reliability is the type of suspension. Traditionally, trailers are equipped spring suspension, which is characterized by simplicity of design and high maintainability. The springs cope well with uneven roads and are able to withstand overloads, although they can be a bit harsh when running empty. Replacing springs or pins can be done in any garage with a minimum set of tools.
An alternative is torsion shafts, which are often installed on more modern or European models. The torsion bar provides a smoother ride and better stability on the track, as the center of gravity is located lower. However, repairing such a suspension in the field is practically impossible, and if it fails, the entire assembly or specialized maintenance must be replaced.
The braking system is another critical safety aspect. According to the rules, trailers with a gross weight of more than 750 kg must be equipped with brakes. The most common are inertial braking systems, which are activated when the car brakes. Regular checking of brake pads and cables is a mandatory procedure before each season.
⚠️ Attention: Operating a trailer with a faulty brake system or damaged springs is prohibited. Before each ride, check the security of the wheels and the condition of the safety cables.
Lubricate the spring pins and wheel axles with special graphite grease before the start of the season - this will prevent squeaks and extend the life of the suspension.
Comparison table of popular models
To simplify the choice, it is worth comparing the main technical characteristics of the popular modifications. These parameters will help you determine which model is best suited to your needs and vehicle capabilities.
| Model | Load capacity (kg) | Suspension type | Features |
|---|---|---|---|
| Tonar 8213 | 490 | Spring | Basic model, sides 400 mm |
| Tonar 82131-0000010 | 750 | Spring | Reinforced, sides 600 mm, A-type drawbar |
| Tonar 82135 | 1100 | Leaf spring (2 axles) | Two-axle, tipper platform |
| Tonar 97913 | 540 | Torsion bar | With canopy, tailgate, jockey wheel |
When choosing between a single-axle and a two-axle model, it is important to consider not only load capacity, but also maneuverability. Two-axle trailers are more difficult to control on narrow roads, but much more stable on the highway. Single-axle models are easier to tow, especially on small-engine vehicles.
For regular transportation of bulk cargo weighing more than 500 kg, the optimal choice would be a two-axle dump truck with spring suspension.
Legal aspects and operating rules
The use of a trailer on public roads is regulated by the Road Traffic Rules and technical regulations. The driver must have registration documents for the trailer (PTS and STS), as well as a valid MTPL policy that covers the trailer (often it is included in the main car policy, but this needs to be checked).
Lighting devices must be fully operational and meet standards. Using LED optics instead of incandescent lamps may require the installation of an additional matching unit (Smart Connect) so that the vehicle’s on-board computer does not generate an error. The dimensions of the cargo must not exceed the width of the trailer by more than 20 cm on each side, and if the length exceeds 1 meter, the cargo must be marked with the “Oversized cargo” sign.
The driver's license category also matters. If the gross weight of the trailer exceeds 750 kg, and the total weight of the vehicle and trailer exceeds 3500 kg, a driving category will be required "E" (eg B+E). In other cases, the standard category "B" is sufficient. Violation of these rules entails a fine and the car being impounded.
☑️ Check before departure
Trailer maintenance and care
The durability of a trailer directly depends on the quality and regularity of maintenance. The main enemy of a metal structure is corrosion, so after each trip through mud or in winter it is recommended to wash the bottom and frame. Particular attention should be paid to the places of welds and fastenings, where metal destruction most often begins.
Wheel bearings require regular lubrication and inspection. Many modern models are equipped with serviceable hubs, where grease can be changed without removing the bearings, but classic versions require periodic disassembly and refilling with grease. Leakage of lubricant from under the caps is the first signal that intervention is necessary.
Rubber products, such as oil seals and spring bushings, lose their elasticity over time. Their timely replacement will prevent backlash and knocking in the chassis. Also, do not forget to check the tension of the winch cables (if there is one) and the condition of the electrical wiring, which often suffers from vibration and moisture.
⚠️ Attention: Do not exceed the maximum load on the towbar ball specified in the instructions. Excessive vertical pressure can damage the vehicle body or the tow bar itself.
Frequently asked questions (FAQ)
Do I need to register a trailer with the traffic police if it is new?
Yes, any trailer, regardless of whether it is new or used, is subject to mandatory registration with the traffic police within 10 days after purchase. To do this, you will need the owner’s passport, a purchase and sale agreement, a trailer’s title and a receipt for payment of the state duty. Operation without a license plate and STS is prohibited.
Is it possible to transport people in the back of a passenger trailer?
Absolutely not. The design of light trailers does not provide seats for passengers, seat belts and appropriate shock-absorbing properties. Transporting people in the back of a trailer is prohibited by traffic regulations and is extremely dangerous to life.
How often does a trailer need to be inspected?
According to current legislation, trailers owned by individuals and used for personal use are exempt from mandatory technical inspection. However, this does not relieve responsibility for the technical condition of the vehicle.
What to do if the trailer starts to wobble on the highway?
Vibration (“yaw”) is often caused by improper loading. The bulk of the load should be located closer to the trailer axle or slightly in front of it, but not on the tongue itself. Also check the tire pressure and any play in the suspension. If the effect occurs, do not brake sharply, it is better to gradually release the gas.