{"product_id":"bmw-m5-m8-front-brake-rotor-left-oem-34117991101","title":"BMW M5 \/ M8 Front Brake Rotor — Left — OEM 34117991101","description":"\u003cp\u003eGenuine OEM front left brake rotor (SHW Performance cross-drilled composite) for the BMW M5 (F90) and M8 (F91\/F92\/F93). Factory-original 395×36mm floating composite disc — the same SHW-manufactured unit supplied to BMW on the production line. For vehicles without M Carbon Ceramic Brakes.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003e34 11 7 991 101 — Front Brake Rotor, Left (SHW BFL42501)\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eFitment (Verified)\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBMW M5 F90 (2018–2025) — without M Carbon Ceramic Brakes (S2NKA)\u003c\/li\u003e\n\u003cli\u003eBMW M8 F91 Convertible (2019–2025) — without M Carbon Ceramic Brakes\u003c\/li\u003e\n\u003cli\u003eBMW M8 F92 Coupé (2019–2025) — without M Carbon Ceramic Brakes\u003c\/li\u003e\n\u003cli\u003eBMW M8 F93 Gran Coupé (2020–2025) — without M Carbon Ceramic Brakes\u003c\/li\u003e\n\u003cli\u003eBMW 5 Series G30\/G31 with M Sport Brake — 4.4L (select variants)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e⚠️ Not compatible with M Carbon Ceramic Brakes (option S2NKA). VIN confirmation required before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe M5\/M8 front braking system employs a 395mm cross-drilled floating composite rotor — a two-piece aluminium hat and cast iron ring construction that reduces unsprung mass by approximately 30% versus a conventional solid-cast disc, directly improving steering feel, chassis response, and sustained braking performance. SHW is the BMW OEM supplier for this assembly; the unit supplied here is produced to the identical specification as the factory-installed disc. Aftermarket alternatives frequently present dimensional deviations in the floating contact points between hat and ring, introducing thermal distortion and vibration under sustained high-temperature braking. This factory-specification left rotor ensures correct floating motion, hat parallelism, and thermal expansion characteristics matched to the M5\/M8 front caliper geometry.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation Note\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eReplace front rotors as an axle pair — never single side. Use new rotor retention bolt — cannot be reused. Torque to BMW specification. Bed new rotors per BMW M procedure before full-load braking. Inspect caliper slides and pad condition before installation.\u003c\/p\u003e","brand":"BMW","offers":[{"title":"Default Title","offer_id":52221144105250,"sku":"BMW-34117991101-L","price":898.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0944\/3957\/1746\/files\/066-37_2.webp?v=1786015561","url":"https:\/\/europarts360.com\/es\/products\/bmw-m5-m8-front-brake-rotor-left-oem-34117991101","provider":"Europarts360","version":"1.0","type":"link"}