{
    "style": "661",
    "name": "BMW OEM Wheel Style 661",
    "url": "https://bmwoemwheelstyles.com/bmw-oem-wheel-style-661/",
    "json_url": "https://bmwoemwheelstyles.com/data/wheels/bmw-oem-wheel-style-661.json",
    "methodology_url": "https://bmwoemwheelstyles.com/data/",
    "wheel_sizes": [
        "8J × 18\""
    ],
    "offsets": [
        "ET 30"
    ],
    "bolt_patterns": [
        "5×112"
    ],
    "part_numbers": [
        "36117873941",
        "36116873941"
    ],
    "tire_sizes": [
        "245/45R18"
    ],
    "chassis": [
        "G30",
        "G31",
        "G38"
    ],
    "canonical_configurations": [
        {
            "width_j": 8,
            "diameter_in": 18,
            "offset_mm": 30,
            "bolt_pattern": "5×112",
            "center_bore_mm": null,
            "weight_kg": null,
            "part_number": "36117873941",
            "axle": "",
            "chassis": "",
            "finish": "Ferric Grey",
            "row_status": "documented-spec-row",
            "tire_size": "245/45R18",
            "tire_width_mm": 245,
            "tire_profile": 45,
            "tire_diameter_in": 18
        },
        {
            "width_j": 8,
            "diameter_in": 18,
            "offset_mm": 30,
            "bolt_pattern": "5×112",
            "center_bore_mm": null,
            "weight_kg": null,
            "part_number": "36116873941",
            "axle": "",
            "chassis": "",
            "finish": "Ferric Grey",
            "row_status": "documented-spec-row",
            "tire_size": "245/45R18",
            "tire_width_mm": 245,
            "tire_profile": 45,
            "tire_diameter_in": 18
        }
    ],
    "date_modified": "2026-07-26T12:14:15+00:00",
    "summary": "Style 661 is a documented BMW original-equipment wheel in this library. Documented diameters include 18-inch. Recorded sizes include 8J × 18\" ET30. Documented bolt pattern: 5×112. Documented chassis associations include G30, G31, and G38.",
    "citation_note": "Cite documented fields only. Blank fields are unknown, not typical values. BMW Wheel Library is an independent enthusiast reference and is not affiliated with BMW AG."
}