BS

BS stamped on a tire sidewall identifies Bridgestone as the manufacturer. It appears as part of the tire's DOT code and other markings, alongside the plant location and production date. Bridgestone, headquartered in Tokyo, is one of the world's largest tire producers, serving original equipment manufacturers (OEMs) and replacement markets across passenger cars, trucks, motorcycles, and industrial applications.

The marking serves a critical function in tire traceability and recalls. If a defect or safety issue emerges, regulators and manufacturers use the BS identifier to isolate affected production batches. The DOT code following BS includes a two-letter plant code and a four-digit week and year code, allowing forensic tracking back to the specific facility and production run.

Bridgestone operates multiple factories worldwide, each assigned its own plant code. A tire marked BS with code AD came from their Airdrie, Scotland facility, while other codes direct to plants in the United States, Japan, Mexico, or elsewhere. Automotive suppliers and fleet managers use BS markings to source replacement tires from the same production source when consistency matters, such as in critical fleet applications or warranty disputes.

In the aftermarket, BS appears on radial tires for passenger vehicles, light trucks, and heavy-duty applications. OEM fitments on vehicles from Toyota, Honda, Ford, and many other makers commonly bear Bridgestone rubber. The abbreviation itself is never ambiguous within tire documentation, though colloquially some technicians may refer to specific Bridgestone product lines by model name rather than the manufacturer mark.