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How to Identify Run-Flat Tire Markings

2 Answers

BarrettFitz

07/29/25 2:53am

Identifying run-flat tire markings involves checking the sidewall markings and tire model. Below are specific details about run-flat tires: 1. Sidewall Markings: The English term for run-flat tires is 'run-on-flat'. 2. Tire Model: The aspect ratio of run-flat tires is generally below 55.

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LaAurora

08/12/25 6:47am

Last time I helped a friend pick a used car, I specifically researched the run-flat tire markings. The simplest way is to look for the RSC mark printed on the tire sidewall - this abbreviation stands for Run-flat System Component. Some tires feature a simplified car icon with wavy lines beneath, resembling a steaming kettle. Michelin uses the ZF marking, while Pirelli uses RFT. The most distinctive feature of run-flat tires is their exceptionally thick sidewalls, which can support the vehicle for about 80 kilometers even after being punctured. When selecting tires, I recommend taking photos and sending them to authorized dealers for confirmation - it's more reliable than visual inspection.

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