What is the speed rating code on tires?

[Jeff]

Tire codes represent the tire width, aspect ratio, rim diameter, load index, and speed rating symbol. Here is some information about tires: 1. Introduction: The sidewall thickness of a tire is 5mm. Based on the carcass structure, automotive tires can be divided into pneumatic tires and solid tires. Most modern vehicles use pneumatic tires. Depending on the internal air pressure, pneumatic tires can be classified into high-pressure tires, low-pressure tires, and ultra-low-pressure tires. 2. Types: Low-pressure tires are commonly used in various vehicles. Pneumatic tires can also be divided into tube tires and tubeless tires based on their structure. Passenger cars generally use tubeless tires. Depending on the arrangement of internal cord layers and cushion layers, tires can be further categorized into radial tires and bias-ply tires. Radial tires are widely used in vehicles. These specifications are all marked on the tire sidewalls.

[StJuliet]

Those tiny letters on the tire are speed rating codes, like H or V. Simply put, they indicate the maximum safe speed the tire can handle. When I bought my car, I researched it—for example, H means 210 km/h, and V means 240 km/h. You need to check if your tires can handle highway speeds. If you casually replace them with lower-rated tires, driving fast could cause a blowout, which is extremely dangerous. Different cars come with different codes—sports cars have W or Y, while family cars are fine with T or H. I suggest everyone check their car’s manual before replacing tires; don’t just go for the cheapest option. Also, when inspecting tires, pay attention to whether the code is worn out. If it’s illegible, replace the tire immediately.

[VonRuth]

The letter engraved on the tire is the speed rating code. Let me remind you, this is crucial as it indicates the maximum safe speed the tire can handle. For example, my SUV's tires have an H rating, meaning a top speed of 210 km/h. If your tire has a lower rating like T (190 km/h), exceeding that on highways is risky. Each letter corresponds to a specific speed – you can check online charts. Always verify the code when replacing tires, never go below the original rating. Also, remember that aging tires lose speed tolerance. Don't assume a 240 km/h rating lasts forever; replace them after 5-6 years for safety.

[BellaFitz]

There's a letter symbol on the tire sidewall, which indicates the speed rating. Common codes include L for 120 km/h, T for 190 km/h, H for 210 km/h, and V for 240 km/h. When I last changed tires, the mechanic said you should choose based on your driving habits. For daily highway driving, it's best to use V or W rated tires, while T rating is sufficient for city commuting. Be careful not to mix tires with different speed codes, as uneven grip may cause skidding. Checking the code is simple - just crouch down and look at the sidewall characters. Remember this code is as important as the load index, relating directly to driving safety. If unsure, take a photo and consult a professional.