Tire Size Chart

This post was last updated on December 28th, 2021 at 09:43 pm

In addition to the brand, every car tire also has a tire size on it. This tire size is made up of several codes, making it difficult for many people to understand. Below we have made an understandable story of the tire size, supported by a tire size chart. These tire Size Charts work for motorized vehicles like cars, busses, RVs, tractors, trucks etc…

Tires Size Chart Summary:

  • Sizing and Dimensions on tires explained: What does it mean?
  • Where to buy the best tires online? Tires with service, discount tires,…
  • Tires Size Charts

The tire size is made up of 7 factors, namely the width of the tire, the height of the tire, the type of tire, the rim size, and the load capacity and speed index.

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Tire Size Chart: Tire Dimensions explained

Tirs size reading explained

Trie sizes explained by Auto123.com

Tire Size Chart – Width of the tire

The width of the tire is shown in mm (millimeters). In the example above, the number 195 can be seen. This means that the tire is 195 mm wide. The width of the tire can vary from 125 mm to 335 mm. The width always goes in steps of 10 mm. Tire sizes range from 125-135-145-155-165-175-185-195-205-215-225-235, etc. The tire width of the average middle class car is 205 mm wide.

Tire Size Chart – Height of the tire

Height of car tire In the tire size, the number that comes after the width of the tire (2nd part) is the height of the tire which is a percentage of the width of the tire. In the example above that number is 55. This means that the height of the tire is 55% of the width of the tire, which in this example is 195 mm. The calculation is easy by multiplying the width of the tire (195) by 0.55. You then arrive at 107.25 mm

Tire Size Chart – Tire Type

The tire type is in almost all cases indicated with the letter R. R stands for Radial. Radial explains how the tire was made. With a Radial tire, steel cord plies are applied perpendicular to the direction of rotation, so in the width of the tire. This makes the tire very flexible and maintains contact with the road surface when cornering. The counterpart of the Radial tire is the Diagonal tire. With the Diagonal band, the cord layers are placed diagonally over the band.

Tire Size Chart – Rim size

The rim size is the size of the rim around which the tire fits exactly. This is the inner size of the car tire and the outer size of the rim. Rim size is almost always given in inches. The unit of measure “Inches” is widely used in English-speaking countries and is indicated by the symbol “which we see as a quotation mark. One inch equals 2.54 cm.

Smaller cars are more likely to have a smaller rim size than larger cars. A larger rim fits wider tires which are necessary for better road holding and can also handle a higher weight. Nowadays, cars are increasingly equipped with larger rims (15 ″ / 16 ″ / 17 “) because this is not only more beautiful and sporty, but also because the tires are more common, which makes them cheaper. There used to be a lot of cars driving around with 13 inches and 14 inches. Today that is 15 inches, 16 inches 17 inches.

Tire Size Chart – Load capacity


load capacity code The load capacity of a car tire is displayed in a code. This code consists of 2 digits. In our example it says 87. According to the table, the code 87 stands for 545 KG. This means that this tire can carry a weight of 545 KG without breaking down. This is sufficient for an average passenger car. This would be too little for a van. Even if the sample tire would fit around the rim of a van, the tire is not suitable for the application. In the table below you can see the codes that correspond to the weight in KG.

CodeKGCodeKGCodeKGCodeKGCodeKG
501906529080450956901101060
511956630081462967101111090
522006730782475977301121120
532066831583487987501131150
542126932584500997751141180
5521870335855151008001151215
5622471345865301018251161250
5723072355875451028501171285
5823673365885601038751181320
5924374375895801049001191360
6025075387906001059251201400
6125776400916151069501211450
6226577412926301079751221500
63272784259365010810001231550
64280794379467010910301241600

Tires Sizing Chart – Speed rating

The speed index is a letter code that follows immediately after the wire power (2 digits). The speed index tells what the maximum speed of the tire is.

In our example 195/55 R16 87V, the letter V is the speed code. The letter V stands for 240 Km p / h. This is the maximum speed that the tire is allowed. Driving faster can therefore lead to dangerous situations.
In the table below, all letter codes of the speed index are shown with the corresponding maximum speed.

Below Tire speed rating is an example of the most common Tire Speed ratings, ..want to learn all about Tire Speed Rating with complete charts? read it here

CodeKM p/uCodeKM p/uCodeKM p/uCodeKM p/u
M130P150Q160R170
S180T190H210V240
W270Y300

Tires Sizing and Running direction


The direction of tire rotation: What is independent of the tire size is the direction of rotation. Some tires have an arrow on the side of the tire. This arrow indicates the direction of rotation / running direction of the tire. The arrow must always point towards the front of the car. Tires with a V profile have at least an arrow and therefore also a running direction. Pay attention to this when mounting the tire or when changing a wheel. The steering and driving behavior can be directly influenced by incorrect mounting.

Tire Brands Size Charts

The pictures of this post is by Mike via Pexels

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