What is the Pirelli run-flat tire symbol?

[QuinnDella]

Pirelli tires can be identified as run-flat by the markings on the sidewall. Run-flat tires, also known as air-maintaining tires, will have RSC or R-F markings on the sidewall. Here are the methods to determine if a tire is run-flat: 1. Check the sidewall markings: The English term for run-flat tires is RUNONFLAT. Goodyear's run-flat symbol is ROF, Pirelli's is R-F, Bridgestone's is RFT, and there are other English markings such as Michelin's ZP, Continental's SSR, and Hankook's HRS. 2. Based on the vehicle model: Due to the higher cost of run-flat tires, making them more expensive than regular tires of the same model, they are generally only equipped on mid-to-high-end vehicles. 3. Based on the tire model: Generally, run-flat tires have an aspect ratio of 55 or below, with 60 or above being rare.