
Pirelli's run-flat tire symbols are RSC or RF. Below is relevant information on how to identify whether a Pirelli tire is run-flat: 1. Check the sidewall markings: The English term for run-flat tires is "run-on-flat." For example, Goodyear tires use the abbreviation ROF, Pirelli uses R-F, Bridgestone uses RFT, and there are other English markings such as Michelin's ZP (short for zero-pressure), Continental's SSR, and Hankook's HRS. 2. Based on the vehicle model: Due to the high cost of run-flat tires, a single run-flat tire is at least 300-500 RMB more expensive than a regular tire of the same model. Therefore, run-flat tires are generally only equipped on mid-to-high-end models. For example, all BMW models come standard with run-flat tires, while Mercedes-Benz and Audi equip them only on some high-end sedans. 3. Based on the tire model: Generally, run-flat tires have an aspect ratio of 55 or below, with 60 or above being rare.

I've driven heavy trucks for over 20 years and seen plenty of Pirelli tires. Their run-flat indicator is the RFT letters printed on the tire sidewall, which stands for Run Flat Tire. This marking indicates the tire features specially reinforced sidewalls that allow continued driving for about 80 kilometers even after a puncture. Last time my partner's truck had a blowout on the highway, it was Pirelli's run-flat tires that got us to the service area. Vehicles equipped with these tires usually don't need a spare, but it's crucial to maintain a properly functioning tire pressure monitoring system. Run-flat tires cost about 30% more than regular tires, but they can truly be lifesavers in emergencies. Friends who frequently drive long distances should consider them.

Last week, I just helped my daughter replace her tires with Pirelli run-flats and specifically researched the run-flat markings. You need to look for the words 'RUN FLAT' or the 'RFT' symbol on the tire sidewall, which stands for Run-Flat Technology. The special feature of these tires is their double-layer sidewalls, allowing them to support the vehicle's weight and continue driving even when completely flat. However, it's important to note that run-flat tires compromise comfort, making bumps like speed bumps noticeably harsher. The mechanic at the repair shop told me that after installing Pirelli run-flat tires, a dynamic balance check is essential to prevent steering wheel vibrations. Nowadays, many luxury cars come equipped with these tires as standard, significantly reducing the hassle of blowouts.

According to Pirelli's official website, the run-flat tire marking is uniformly labeled as RFT, printed on the tire sidewall near the wheel hub. The core technology involves reinforcing the sidewall rubber to support the vehicle driving under zero tire pressure. I saw discussions in car enthusiast groups mentioning three key points when using Pirelli run-flat tires: the tire pressure should be about 10% higher than regular tires, the tire should not be repaired more than twice, and it should be replaced after exceeding 60,000 kilometers. Although slightly more expensive, considering the directional stability during a blowout, it's particularly suitable for new drivers or frequent highway driving.

Accompanying a friend to the 4S store to choose tires, the salesperson pointed out the RUN FLAT logo of Pirelli run-flat tires to me, located near the inner groove on the tire sidewall. The biggest advantage of this type of tire is that after a blowout, you can still drive at 80 km/h for about 70 to 80 kilometers, which is enough to get you to a repair shop. However, the salesperson reminded that run-flat tires are 2 to 3 kilograms heavier than regular tires, which may slightly increase fuel consumption. Here's an interesting fact: Pirelli run-flat tires with a five-pointed star mark on the side are special models originally equipped for BMW and Mercedes-Benz. Nowadays, more and more car owners are choosing run-flat tires, mainly for the sake of convenience and safety.


