{"product_id":"dynamite-friction-640-31114-disc-brake-rotor","title":"Dynamite Friction 640-31114 Disc Brake Rotor - Rear","description":"\u003ch2\u003eOverview of Dynamite Friction DFC Brake Rotor\u003c\/h2\u003e\u003cp\u003eThe Dynamite Friction DFC Brake Rotor - Dimpled and Slotted (part number 640-31114) is engineered for precision braking performance on select BMW models. Designed as a vented disc brake rotor, it offers enhanced heat dissipation and consistent stopping power for vehicles such as the BMW 330i xDrive and 440i Gran Coupe.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eVented rotor design for improved cooling\u003c\/li\u003e\n\u003cli\u003eDimpled and slotted surface to reduce brake fade\u003c\/li\u003e\n\u003cli\u003eNominal thickness of 24 mm with discard thickness at 22.4 mm\u003c\/li\u003e\n\u003cli\u003eOutside diameter of 345 mm and inside diameter of 75 mm\u003c\/li\u003e\n\u003cli\u003eFive bolt holes with 16.6 mm diameter for secure fitment\u003c\/li\u003e\n\u003cli\u003eHeight of 66.2 mm ensuring proper alignment and clearance\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThis DFC Brake Rotor - Dimpled and Slotted from Dynamite Friction is specifically designed to meet the braking demands of various BMW models including the 230i, 335i xDrive, and M240i xDrive. The vented rotor construction allows air to flow between the rotor surfaces, effectively dissipating heat generated during braking. The dimpled and slotted pattern helps to evacuate gases, dust, and water, maintaining consistent brake pad contact and reducing the risk of brake fade under heavy use.\u003c\/p\u003e\u003cp\u003eWith a nominal thickness of 24 mm and a discard thickness of 22.4 mm, this rotor provides a balance between durability and performance. The 345 mm outside diameter and 75 mm inside diameter are engineered to fit the specified BMW models precisely, while the five bolt holes with a 16.6 mm diameter ensure secure mounting. The rotor height of 66.2 mm is designed to maintain proper clearance within the brake assembly.\u003c\/p\u003e\u003ch2\u003eCompatible BMW Models and Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBMW 230i and 230i xDrive\u003c\/li\u003e\n\u003cli\u003eBMW 328i and 330i xDrive\u003c\/li\u003e\n\u003cli\u003eBMW 335i and 335i xDrive\u003c\/li\u003e\n\u003cli\u003eBMW 340i and 340i xDrive\u003c\/li\u003e\n\u003cli\u003eBMW 428i, 428i Gran Coupe, and 428i xDrive\u003c\/li\u003e\n\u003cli\u003eBMW 430i and 430i xDrive\u003c\/li\u003e\n\u003cli\u003eBMW 435i, 435i Gran Coupe, 435i xDrive, and 435i xDrive Gran Coupe\u003c\/li\u003e\n\u003cli\u003eBMW 440i, 440i Gran Coupe, 440i xDrive, and 440i xDrive Gran Coupe\u003c\/li\u003e\n\u003cli\u003eBMW ActiveHybrid 3\u003c\/li\u003e\n\u003cli\u003eBMW M240i and M240i xDrive\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCommon Issues Addressed by This Rotor\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBrake fade caused by excessive heat buildup\u003c\/li\u003e\n\u003cli\u003eUneven brake pad wear due to rotor surface irregularities\u003c\/li\u003e\n\u003cli\u003eReduced braking efficiency in wet conditions\u003c\/li\u003e\n\u003cli\u003eVibration or pulsation during braking from warped rotors\u003c\/li\u003e\n\u003cli\u003ePremature rotor wear from inadequate cooling\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eEnsure rotor thickness is above discard thickness (22.4 mm) before installation\u003c\/li\u003e\n\u003cli\u003eClean rotor surface to remove any protective coatings or debris\u003c\/li\u003e\n\u003cli\u003eTorque lug bolts to manufacturer specifications for BMW models\u003c\/li\u003e\n\u003cli\u003eInspect brake pads and calipers for wear or damage during installation\u003c\/li\u003e\n\u003cli\u003ePerform a proper bed-in procedure after installation for optimal performance\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eDynamite Friction manufactures the DFC Brake Rotor - Dimpled and Slotted to meet OEM standards for fit and function on compatible BMW vehicles. The vented rotor design and precise machining contribute to consistent braking performance and durability. Please refer to Dynamite Friction's warranty policy for specific coverage details related to this part number 640-31114.\u003c\/p\u003e","brand":"Dynamite Friction","offers":[{"title":"Default Title","offer_id":43389652107445,"sku":"HBHR-640-31114","price":84.03,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/DF_64031114_Fro_9a69f964-1900-4e50-a46d-e69d8f967822.jpg?v=1774634591","url":"https:\/\/www.partcatalog.com\/products\/dynamite-friction-640-31114-disc-brake-rotor","provider":"PartCatalog","version":"1.0","type":"link"}