What does the e4 on a tire mean?
2 Answers
The e4 on a tire indicates that it is a verification mark that complies with international standards. E4 is the safety certification mark for tires in the European market, and the following number is usually 7 digits. Tires sold in the European market must have this mark, indicating that the tire meets the requirements of ECE R30 or R54. The sidewall of a tire has three letters starting with "T": Treadwear represents the wear resistance index, Traction represents traction performance, and Temperature represents the temperature index. The first number is the tread width of the tire, the second number represents the thickness of the tire, and the letter "R" indicates that it is a radial tire. The number following the letter "R" refers to the wheel hub that the tire can be mounted on, which is the aluminum alloy wheel in the center of the tire. The tires of motor vehicles are important components that come into direct contact with the road surface. Together with the suspension of the motor vehicle, they help to cushion the impact forces encountered during driving, ensuring good ride comfort and smooth driving. They also ensure good adhesion between the vehicle's wheels and the road surface, improving the vehicle's traction and braking performance. In addition to the verification mark, tires also display the following common data: Tire cord material: Represented by Chinese pinyin, such as M for cotton cord, R for rayon cord, N for nylon cord, G for steel cord, and ZG for steel radial cord tires. Speed rating: Indicates the maximum speed at which the tire can carry a specified load under specified conditions. Letters from A to Z represent the certified speed ratings of tires from 4.8 km/h to 300 km/h. Common speed ratings include: Q: 160 km/h; H: 210 km/h; V: 240 km/h; W: 270 km/h; Y: 300 km/h. Rim specification: Indicates the rim specification compatible with the tire for practical use, such as standard rim 5.00F. The sidewall of a tire has three letters starting with "T": Treadwear represents the wear resistance index, Traction represents traction performance, and Temperature represents the temperature index.
As a long-time car enthusiast, I'm quite familiar with tire markings. The 'e4' on a tire is actually part of the European certification mark, specifically indicating the Netherlands as the country code, meaning the tire has passed safety and performance tests in the Netherlands and complies with EU standards. These numbers represent different certification authority locations, for example, e1 is Germany, e2 is France. When selecting tires for daily use, I pay attention to this marking because certifications from different countries may affect the actual performance of tires, such as grip and durability. Additionally, the tire sidewall also contains size and speed rating information, like 205/55 R16, and understanding these together can help you choose the right tires for different driving conditions. For safety, I recommend developing the habit of checking tire pressure and tread wear monthly, especially paying extra attention during seasonal changes.
