| Intro |
| Load index |
| Speed index |
| Width |
| Aspect ratio |
| Construction |
| Rim diameter |
| ENLITEN Technology |
| OE sidewall marking |
| RFT |
| B-Seal |
| B-Silent |
| Ologic |
| HL tyres |
| Energy Label |
Tyre markings explained
Have you ever wondered what the markings on the sidewall of your tyre mean? Your tyre’s sidewall markings are a tyre specification guide containing important information about size, load, and much more. This indicates the nominated tyre size for your vehicle from the manufacturer. Be careful if changing away from the nominated tyre size, as this could make your vehicle un-roadworthy. Learn how to read tyre codes below.
Load Index
After the rim diameter, we find the load rating. This tells you the maximum capacity of a passenger car tyre when it is inflated to its maximum safe pressure. The figure (in this example, “87”) refers to the index rather than the weight. As such, you will need to consult a load index table (below) which determines the load in kg for each rating. For a load index of “87”, the maximum load weight is 545kg/tyre.
| Li | Kg | Li | Kg | Li | Kg | Li | Kg | Li | Kg | Li | Kg |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Percentage Of Load Capacity (%) versus Speed | ||||
|---|---|---|---|---|
|
Speed Capability of the vehicle (km/h) |
||||
| Speed Symbol | ||||
| H | V | W | Y | |
| % | % | % | % | |
Speed Index
The final tyre marking in this string represents the speed rating. As you might have guessed, this denotes the maximum speed a tyre can sustain when it is correctly inflated and under load. As with the load index, this letter references a look-up table which indicates the maximum permissible speed of a tyre. In this example, “V” means the vehicle has a maximum speed of 240 km/h under the maximum load.
| SS | KM/H | SS | KM/H | SS | KM/H | SS | KM/H | SS | KM/H |
|---|---|---|---|---|---|---|---|---|---|
Width
The section width of your tyre in millimetres, from the inner sidewall to the outer sidewall. Example: 195mm
Aspect Ratio
The following two numbers (“55”) represent the aspect ratio – or measurement of the sidewall height (in mm). Essentially, this is the ratio of the tyre’s cross-section to its width. So, in the above example, a tyre that has an aspect ratio of 55 would have a height equal to 55 per cent of its width.
Construction
Next up is a letter. This tells you how a tyre is constructed. In this example, the “R” means that the tyre has radial construction. This is where the internal ply cords extend across the casing from bead to bead, in a radial direction. Less common tyre constructions include diagonal or bias ply, represented by the letter “D”.
Rim Diameter
The next number represents the diameter code. Unlike the width, this is shown in inches. This is particularly important because it represents the diameter of the wheel rim. In the above example, the number “16” means that the tyre should be matched to a rim wheel of 16 inches.
ENLITEN Technology
ENLITEN is a combination of cutting-edge technologies
Providing
- Improved sustainability characteristics.
- EV-readiness
Without compromising on
- Safety
- Outstanding tyre performance
Example:
ENLITEN brings a combination of cutting-edge technologies to Turanza 6:
Providing
- Significant longevity improvements
+ 22% mileage vs predecessor1 - Reduced rolling resistance
-4% rolling resistance vs predecessor1 - EV-readiness
Without compromising on
- Best-in-class wet performance2
- Best cornering aquaplaning
- Best wet cornering
-
Outstanding wet braking and
straight-line aquaplaning - Best-in-class dry braking2
OE sidewall marking
Just something
RFT
Just something
B-Seal
Just something
B-Silent
Just something
Ologic
Just something
Energy Label
Just something