SUCOSO M14x1.5 Lug Bolts 20-Piece Set — Black 60° Conical Seat, 17mm Hex for BMW E65/E66 X3 E83 X5 E53

SUCOSO 14x1.5 OEM lug bolts are a 20-piece set of black, M14x1.5 60° conical-seat fasteners designed to replace factory bolts on specified BMW models and fit many aftermarket Audi and VW wheels.

These lug bolts are engineered to match the OEM thread pitch and seat profile common to several BMW factory wheels while also fitting many aftermarket wheels for Audi and Volkswagen that accept a 60° conical seat. Built from SCM435 alloy steel and finished with a black electrophoretic coating, the set focuses on strength, corrosion resistance and a sleek, low-profile look. The pack includes 20 bolts sized to work with wheels that require an overall length of roughly 52mm and a shank length near 28mm.

How do I confirm these bolts fit my car?

Start by checking the thread size and seat type on your vehicle or wheel: these bolts require M14x1.5 threads and a 60° conical seat. Measure the seat and thread with a gauge, consult your vehicle’s OEM manual, or compare to an existing bolt. Fitment examples are listed below to help you verify compatibility.

• BMW fit: 7-series (E65/E66) 2002–2008, X3 (E83) 2004–2009, X5 (E53) 2000–2006
• Aftermarket wheels: Audi models (A3, A4, A5) and VW models (Golf, GTI, Jetta, Passat, Tiguan) that accept 60° conical seats
• Measured dimensions: Thread pitch M14x1.5, overall length ~52mm, shank length ~28mm

What are the key specifications and materials?

The SUCOSO lug bolts are manufactured from SCM435 alloy steel using cold forging to increase tensile strength, then coated with a black electrophoretic finish for improved corrosion resistance. Each bolt uses a 17mm hex drive and a 60° conical seat to match OEM-style wheel hubs and many aftermarket wheels.

• Thread pitch: M14x1.5
• Shank length: 1.1 in (28mm); overall length: 2.04 in (52mm)
• Drive: 17mm hex; seat: 60° conical
• Quantity: 20 pieces per set; color: black

How should I install these lug bolts safely?

Install by hand first, threading each bolt in to avoid cross-threading, then tighten to the manufacturer’s torque specs using a calibrated torque wrench. Do not use an impact wrench for final tightening; SUCOSO recommends hand or torque-wrench installation to preserve thread integrity and ensure correct clamping force.

• Hand-start each bolt to ensure clean engagement
• Use a torque wrench for final torque to OEM or wheel manufacturer values
• Avoid power impact tools to prevent thread damage and incorrect torque

What durability and finish benefits do these bolts provide?

Cold-forged SCM435 steel delivers higher hardness and rigidity than standard fastener steels, while the black electrophoretic coating adds a protective layer that resists rust and road contaminants. The finish also adds a discrete, uniform appearance that complements darker wheels or a blacked-out aesthetic.

• Cold forging improves mechanical strength and fatigue resistance
• Electrophoretic coating reduces corrosion and surface pitting
• Black finish provides clean visual integration with dark wheels

Who is this for: This 20-piece SUCOSO lug bolt set is for owners of BMW 7-Series (E65/E66), X3 (E83) and X5 (E53) who need OEM-thread replacements, plus drivers using aftermarket wheels for Audi and Volkswagen models that require an M14x1.5 thread and a 60° conical seat. It’s also suitable for anyone seeking stronger, corrosion-resistant bolts with a black finish for a more uniform wheel appearance. If you’re unsure about fitment, measure your current hardware or consult a wheel technician before purchasing. SUCOSO provides technical support and after-sales assistance if questions arise during selection or installation.