Decoding The Information On Your Car Tyre Sidewalls Really Mean

Car Tyre

The right choice of tyres is not only the selection of the right size, but it should be intelligently carried out taking into account such parameters as seasonality, design features of rubber, permissible load or speed limit. All the necessary information is perfectly shown on the sidewall of the tyre. This makes it easier for the car owner to make a choice and avoid mistakes when buying.

The recommended car tyre specifications and inflation pressures for your car are basically listed on the tyre placard found on every car. Your vehicle’s glove box, driver’s door, fuel cap, or under the hood may all contain your car tyre placard. The manual for your car also contains the specifics.

What do the colored labels say?

Many times, brand-new tyres Reading come from the factory with unique color markings in the form of stripes or geometric symbols.

The following color marks for rubber used in automobiles are acceptable:

  • Red marks in the shape of triangles and circles on the side of the car tyre show points of power heterogeneity, typically applied to the rubber of the original equipment of the car.
  • Yellow marks in the shape of triangles or circles show the lightest areas on the tyre; and when balancing.

Speed, load and pressure indices

Following the size marking on tyres, the maximum allowable pressure index, speed index, and load index are also marked.

When selecting tyres for the front and rear axles, this value must be perfectly taken into consideration because some manufacturers offer entyrely different installation specifications. Choosing the appropriate model is not difficult because all car tyre manufacturers publish tables with load values and the recommended figure is also stated in the car’s specifications.

Wear resistance margin

The wear margin index shows the approximate expected tyre mileage before it needs to be quickly replaced. On a tyre the word “treadwear” is a number that represents the wear index, such as “treadwear 400.” You must multiply the index number by 480 km in order to determine the predicted tyre mileage before it wears out. For instance, if a tyre has a treadwear rating of 400, we can calculate the expected mileage to wear it out as 192,000 kilometers by multiplying 400 by 480.

Car Tyre Size

The size of a tyre is its most crucial component. Your car’s rims and the tyre size should be compatible. tyre size is mostly measured in three different ways:

  • Tyre Seat Size
  • Tyre Width
  • Tyre Profile Height

For Example: 205/55 R16

  • 205 – tyre width 205 mm
  • 55 – On some tyres made for light trucks and minibosses, the profile height may not be highly indicated, (for example: 185/R14C), in which case the profile height is 80–82%; these tyres are truly referred to as full-profile. In this case, the tyre profile height is 55% of 205 mm, or 112.75 mm.
  • R – Most modern passenger car tyres have a radial cord arrangement. tyres are mostly classified into two categories based on where the inner cord is actually located: tyres with a radial cord arrangement (R) and tyres with a diagonal cord arrangement (D).
  • 16 – Tyre diameter (rim hole size) is 16 inches

Speed index

The speed index is a tyre parameter that describes the top speed at which a particular tyre can be perfectly driven while carrying its maximum load. Load index and speed index are both related to each other.. The load index and speed index are neatly listed next to the tyre size in tyre markings. For instance: tyre 185/75R14 82S 82 – load index (475 kg per wheel in this case) S – speed index (180 km/h in this case).

Seasonal labeling

tyre marking reveals seasonality in addition to the primary technical features. There are three categories: all-weather, summer, and winter with and without hooks.

No specific marking is necessary for summer tyres Burghfield Hill. Pictograms of the sun, snow, and rain are mostly used to represent all four seasons, and signs like AW (All Weather), AGT (All Grip Traction), or AS (All Season) can be usually used to denote them. The Rain sign may also be mostly included in some instances, meaning the rubber falls under the Rain class.

Winter or M+S (Mud + Snow) inscriptions, a snowflake pictogram, or other markings are mostly used to identify winter tyres. These labels make it possible to decide under which circumstances rubber is more suitable. Additional indications that the car tyre is hydroplane-resistant include an umbrella and the words Aqua, Aquatred, Water, Aquacontact, and Rain.

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