Beyond the design and the brand, there is a detail in the wheels that define its resistance, durability and security.
When you think about tires, attention usually focuses on the design of the rolling band, the measure or brand. However, there is a data recorded on the side that goes unnoticed for many drivers: the load index.
This number, which may seem lower, actually defines the maximum weight capacity that a tire safely supports its indicated inflation pressure. Knowing it is not an unimportant technical detail: it is key to the security, performance and durability of the vehicle, whether a compact car or a heavy work truck.
Ignoring this value can cause accelerated wear, serious failures and even burst, putting both the structure of the vehicle and the safety of its occupants at risk.
What really does the load index mean?
The load index is a numerical code that appears on the tire flank, between the diameter of the tire and the speed code. Example: in registration P205/55R16 91Hthe number 91 Indicate the load index.
This number does not directly indicate kilos or pounds, but is interpreted through a International Table of Equivalenceswhere each value corresponds to a maximum allowed weight.
It is important to note that the index refers to Each separate tire. Thus, a tire with index 91 can support 615 kg, but it is not enough to multiply by four: real capacity will always depend on what the indicates the vehicle information plate (GVWR and GAWR), usually located at the driver’s door, the glove compartment or the manual.
In practice, it is recommended to choose tires with an index equal to or slightly higher than that indicated by the manufacturer, which provides a Extra safety and durability margin.
Impact on security, performance and useful life
Security
A tire with a lower than required load index undergoes excessive stress. This generates heat, weakens the internal structure and increases the risk of bursts, especially with the loaded vehicle. In addition, it compromises stability in curves and braking capacity.
Performance
An inadequate index also affects driving. If the tire is overloaded, it deforms, loses precision and increases fuel consumption for more rolling resistance. Instead, an index too high in a light vehicle can make it rigid, transmitting vibrations to the cabin.
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Useful life
When a tire works above its capacity, it wears out irregularly and prematurely. Heat accelerates the aging of rubber and shortens its expected mileage. Instead, respecting the recommended index ensures uniform wear and greater durability.
Practical tips for choosing and caring for the appropriate load index
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Consult the vehicle plate: There are size, load index, speed code and recommended pressures.
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I kept the correct pressure: A deflated tire drastically reduces its load capacity and wears out faster. Control the pressure at least once a month and before long trips.
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Think about real use: If you transport heavy loads or trailers, a load rate higher than the minimum can be a good investment in safety and durability.
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I chose quality: Optá for recognized brands tires, which meet international standards and adapt to different land and climates.
Source: Ambito
I’m a recent graduate of the University of Missouri with a degree in journalism. I started working as a news reporter for 24 Hours World about two years ago, and I’ve been writing articles ever since. My main focus is automotive news, but I’ve also written about politics, lifestyle, and entertainment.
