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What are the differences between run-flat tires and regular tires in terms of markings?

2 Answers

Rhett

08/30/25 5:29am

Differences between run-flat tires and regular tires: differences in appearance, structure, performance, and weight. Differences in appearance: Run-flat tires have special markings. These special markings are usually found after the tire size on the sidewall. The markings vary depending on the tire brand. If there are special markings, it is a run-flat tire; if not, it is a regular tire. Differences in structure: Regular tires have relatively thinner sidewalls, while run-flat tires have thicker sidewalls. Due to their different structure, run-flat tires are more durable, wear-resistant, and safer than regular tires. Differences in performance: In addition to the functions of regular tires, run-flat tires can allow the vehicle to travel a certain distance even at zero tire pressure. Generally, they can travel up to 80 kilometers at a speed of 80 km/h. Differences in weight: Run-flat tires are heavier than regular tires. If a car is equipped with four run-flat tires, it is equivalent to carrying the weight of an additional person.

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SanJulianna

09/12/25 2:41am

As someone who enjoys tinkering with cars and often researches tire details, I've noticed that run-flat tires and regular tires have very different markings. Run-flat tires usually have codes like RFT or RUN FLAT engraved on the sidewall, and some brands use ZP or DSST markings—making it easy to identify them as run-flat types. Regular tires are simpler, with just the tire size, brand, and manufacturing date, and no special markings. The difference isn't just in the labels; run-flat tires have a unique structure with reinforced sidewalls for added durability. Even if punctured, they can support the car for 50 to 80 kilometers, avoiding the danger of an immediate breakdown, which significantly boosts safety. However, there are downsides: they produce more noticeable vibrations while driving, cost twice as much, and require professional tools for replacement. For highway driving, I find these markings on run-flat tires extremely practical, so it's important to check them carefully when buying a car to avoid being misled by sellers.

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