What does it mean when winter tires exceed 120km?

[GemmaMarie]

It means the owner has set a speed limit warning of 120km/h on the central control panel, indicating that the driving speed should not exceed 120 kilometers per hour during winter. Winter tires are specifically designed for winter driving conditions, featuring special rubber compounds and tread patterns to enhance traction and ensure driving safety in winter. More details about winter tires are as follows: 1. Introduction one: Setting winter tires to exceed 120km can help prevent overheating and provide a system speed limit warning. Based on anti-skid performance, winter tires are divided into three specifications: serrated tread tires, snow tires, and studded tires. 2. Introduction two: The benefits of winter tires include reducing vehicle skidding, enhancing traction, shortening braking distance, and improving vehicle handling.

[MelanieLee]

I've gone through several sets of winter tires, so I'm quite qualified to talk about this 120km/h marking. It's actually the maximum safe driving speed limit indicated by tire manufacturers—think of it like the maximum capacity printed on a bottle. Exceeding this speed causes the tread rubber to overheat and soften, losing grip like putty. Once on an icy highway at 130km/h, I clearly felt the steering wheel go light, which scared me into slowing down immediately. My advice is not to exceed 100km/h even in good winter road conditions, since braking distances on snow/ice are over twice as long as in summer. Remember to regularly check tread depth—replace them when it goes below 4mm; this is one cost you really shouldn't skimp on.

[AlexLee]

As a seasoned driver from Northeast China, I use winter tires every year. That 120 km/h marking doesn't mean the tire will burst at 121 km/h, but the faster you go, the more likely the tires are to skid. Winter tire rubber is much softer than summer tires, providing grip only below -40°C. One Spring Festival on my way back home, driving at 110 km/h on snow, I heard unusually loud tire noise and felt the tires were hot to the touch when I stopped. A mechanic later told me that driving at high speeds like this is particularly damaging to the tires. Now I always keep my speed within the posted limits, especially on bridges and shaded sections of the road—safety comes first, after all.

[LeLaura]

Last time during maintenance, the technician explained that the 120 speed limit for winter tires is mainly due to their low-temperature performance. The special rubber compound on the tread only remains soft in cold conditions. The high temperatures generated by high-speed friction can actually make the tread harden like frozen rubber, causing a sudden loss of grip. For beginners, it's recommended to install a tire pressure monitoring system, which will alert you if the temperature gets too high. Nowadays, I see new winter tires with QR codes that indicate their speed rating. When replacing tires for older cars, remember to have the shop check if they match—don't just go for the cheapest option. Be extra cautious in sleet conditions; even 80km/h can lead to skidding.

[LaNolan]

I researched this issue when choosing winter tires for my wife. The 120km/h speed limit is an internationally unified safety standard, and there must be a speed rating symbol next to the triangular snowflake mark on the tire sidewall. When driving above this speed, the tread grooves can't effectively drain slush and snow, significantly increasing the risk of hydroplaning. Test data shows that at -5°C, the braking distance at 120km/h is 15 meters longer than at 90km/h - equivalent to three car lengths. I recommend northern drivers get a wheel alignment before winter; driving on highways with abnormally worn tires is particularly dangerous. Maintain tire pressure 0.2bar higher than summer levels for better rubber support.

[MacEliza]

Last year's self-driving trip in a snowstorm made me truly understand the significance of winter tire speed limits. Regular tires become rock-hard at -10°C, but the SQ marking on winter tires indicates suitability for snow and ice conditions. Exceeding 120km/h, the tread's fine sipes can't grip the ice in time—just like running on ice with flat shoes. It's advisable to keep a bottle of tire glaze in the car for temporary improvement in snow traction. Southern drivers occasionally visiting snowy areas should remember to carry snow chains—more practical than switching to winter tires in emergencies. Use lower gears for downhill deceleration; tapping brakes may trigger ABS and increase danger.