49.47. What types of tires are there?
UAЯкі бувають типи шин?
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This exam question focuses on the technical foundations of traffic safety: the condition of wheels and tires directly affects traction, braking distance, handling, and vehicle stability on uneven surfaces. For the theoretical exam, it is important to understand the basic structure of tires, as even minor malfunctions can lead to loss of control over the vehicle, and the Traffic Rules of Ukraine require operating a car only in proper technical condition.
This checks the section of the traffic rules concerning the technical condition of vehicles and their equipment, specifically item 31.4. Although the Traffic Rules of Ukraine do not provide a separate “classification of tire types,” in educational practice and during exam preparation, pneumatic tires are divided by the method of air retention into two types: with an inner tube and tubeless. The tube-type has a separate rubber tube with a valve, while the tubeless type retains air thanks to a sealing inner layer of the tire and tight fitting of the beads to the airtight rim, with the valve installed in the wheel disk.
Alternative answer options confuse the type of tire with the types of wheel disks. Formulations such as “stamped and cast” describe the manufacturing method of disks, not tires, and “disk and diskless” refers to the wheel’s construction but does not define how the tire retains pressure. That is why, in the context of this exam question, the correct division is into tube-type and tubeless: it directly explains the difference in construction, operation, and wheel behavior in case of a puncture, which is important for safe driving and understanding the requirements of section 31 of the Traffic Rules.
Clause 31.4 (31 "Technical condition of vehicles and their equipment")
The operation of vehicles is prohibited under the law if the following technical malfunctions and conditions are present.
Explanation: this clause of the Traffic Rules establishes a general requirement — vehicles must not be operated if there are technical malfunctions/conditions, in particular those related to wheels and tires (the details of these conditions are provided in the subclauses of clause 31.4). At the same time, the Traffic Rules of Ukraine do not contain a separate definition or classification of "types of tires" as tube-type and tubeless — this issue belongs to the basic knowledge of the structure/operation of pneumatic tires, and not to the terminology of the Traffic Rules.
Therefore, the correct answer is "Tube-type and tubeless," given that the Traffic Rules require proper technical condition of wheels and tires (clause 31.4), and structurally, pneumatic tires according to educational classification are divided into tube-type and tubeless.
When preparing for the exam, it is important to understand that in the Traffic Rules, a tire is considered an element of the wheel that ensures the vehicle's contact with the road and retains air pressure. It is precisely by the method of air retention that pneumatic car tires are divided into two main types.
A tube-type tire has a separate rubber tube with a valve inside. The tube itself holds the pressure, while the outer casing protects it and interacts with the road surface. In other words, there are two parts here that perform different functions: the tube is responsible for airtightness, and the casing—for grip and strength.
A tubeless tire works differently: there is no separate tube, and the air is retained inside the tire itself. Airtightness is ensured by the inner layer of the tire and the tight fit of its beads to the airtight rim of the wheel, and the valve is installed directly into the rim. A practical example: in the case of a small puncture, a tubeless tire often loses pressure more slowly, because the puncture site is partially "sealed" by the tire material.
Therefore, the correct answer is "Tube-type and tubeless," since by design and method of air retention, pneumatic tires are divided precisely into these two types: with an inner tube or without it.