What does 42j mean on a tire?
2 Answers
42 indicates a maximum load capacity of 150KG, and j represents a maximum permissible speed of 90KM/H. Below is relevant information about tires: Tire Introduction: Tires are the only components of a car that come into contact with the ground. Some car owners only replace the tires on the drive wheels when changing tires. For example, some front-wheel-drive car owners only replace the two front tires, while some rear-wheel-drive car owners only replace the two rear tires. In fact, this practice is acceptable. Tire Aging: Tires are made of rubber and will age over time. It is recommended that car owners replace their tires every four years, even if the mileage is low during that period. This is because tires can also age when left unused for long periods, so it's important to check the production date when purchasing new tires.
I guess you're asking about the meaning of numbers and letters like "42J" on tires. This typically represents the load index and speed symbol: "42" is the load index, indicating the maximum weight the tire can bear (in kg). However, in practice, load indices usually start from 70—for example, 90 means 615kg. The number 42 might be a typo or a rare model, so it's best to check the tire manual for confirmation. "J" is the speed symbol, representing a maximum speed of 100 km/h, suitable for city driving. From my experience, when buying tires, don't just look at the numbers—make sure they match your speed requirements. For highway driving, you should choose "H" or higher. A quick reminder: these codes are engraved on the tire sidewall. During maintenance, pay attention to wear and tear to avoid blowouts. Regularly checking tire pressure can extend their lifespan. I always recommend checking every six months to ensure safe travels.
