Let’s understand the parameters below:
The first three digits you see indicate a tyre’s width in millimetres.
The set of the next two numbers represents the profile or aspect ratio in percentage, which is its height from the base of the tread to the rim.
Please note: Lower profile tyres have smaller aspect ratio percentages.
Denoted by R, it implies that this tyre has radial ply construction. You will rarely find units that have B and D imprinted on them. Those refer to bias belt and diagonal-cross ply, respectively.
After the letter R, you will see a set of two numbers that inform the size of the wheel rims measured in inches.
Followed by the wheel diameter, you will see another set of two numbers which indicates the maximum load that a tyre can withstand when properly inflated.
It indicates the optimal speed that a tyre can safely sustain over time. This is often denoted by various alphabets referring to different speed limits. Those are- ‘H’, ‘S’, ‘R’, ‘V’, ‘P’, ‘Q’, etc.
Take a look at the following example:
Suppose you have purchased new car tyres Manchester with the tyre size 195/55 R16 87V. This signifies-
- 195 is the measurement from the tyre’s inner sidewall to its outer sidewall in millimetres.
- 55 is the profile or aspect ratio in percentage.
- R stands for the radial construction of the model.
- 16 is the diameter of the wheel rim in inches.
- For load index 87, the highest load capacity of this variant is 545 kg.
- V refers to the speed rating of the tyre that is 148 miles per hour.
An incorrect tyre size consumes more fuel. It can also cause steering issues. Therefore, to find out an ideal tyre size for your vehicle, visit our website. Simply enter your vehicle’s registration number and determine the tyre size that fits best.
Stop searching for ‘tyres near me’ and visit us at Manchester Breakdown Services Limited, 1-3 Kay St, Manchester M11 2DX for any information on tyres Manchester. Alternatively call us on 0161 273 2000 for further details.