Titanium bolts M14×28 35 40 45 50mm Conical Seat Lug Bolt Sets for BMW cars, Pitch 1.5mm, by Tianswer

Precision-engineered Aerospace Ti-6Al-4V Grade 5 titanium M14 × 1.5mm 60° conical cone seat wheel lug bolts for BMW and European performance vehicles, available in extended shank lengths from 28mm to 50mm to accommodate factory hubs and aftermarket wheel spacers.

Sold in sets of 5 (1 wheel / spare), 10 (front or rear axle / 2 wheels), and 20 (full car / 4 wheels). Select your color, shank length, and package size.

Package Options & Vehicle Axle Configurations

BMW and European vehicles feature a standard 5-lug wheel bolt pattern (5 fasteners per wheel). To match your maintenance or tuning setup, choose from three tailored package quantities:

• Set of 5 (1 Wheel / Spare): Complete hardware set for one wheel. Perfect for single wheel replacement, spare tire mounting, or test-fitting custom spacer offsets.
• Set of 10 (Front or Rear Axle / 2 Wheels): Contains 10 lug bolts to outfit one complete axle. Ideal when upgrading front or rear brake kits, or when running staggered wheel spacer widths.
• Set of 20 (Full Car / 4 Wheels): Complete 20-piece vehicle set to replace all factory wheel bolts across all four corners for maximum rotating unsprung mass reduction.

Unsprung & Rotating Mass Reduction for BMW Chassis Dynamics

Heavy factory steel lug bolts (typically weighing 85–100 grams each) place parasitic rotating weight right at the wheel hub perimeter. Upgrading to Tianswer Grade 5 titanium wheel bolts cuts fastener mass by ~45% (down to 39–54 grams per bolt depending on length). Reducing unsprung rotating inertia sharpens steering input, improves damper and shock response over road imperfections, and enhances transient cornering stability on high-speed track and street setups.

Precision 60° Conical Taper Seat & 17mm Hex Drive

Features an accurately CNC-machined 60-degree cone seat engineered for seamless interface with BMW OEM wheels and popular aftermarket forged/cast wheels (such as Apex, BBS, HRE, Volk, and Enkei). The 17mm external hex head provides full tool engagement with standard automotive thin-wall sockets, preventing rounded corners and gouged wheel bolt pockets.

Extended Shank Lengths for Wheel Spacer Fitment

Available in five under-head shank lengths to suit stock configurations or staggered spacer widths:

• 28mm Shank: Direct factory OEM replacement for stock BMW wheels without wheel spacers.
• 35mm Shank: Optimized for vehicles running 5mm to 8mm wheel spacers.
• 40mm Shank: Engineered for vehicles equipped with 10mm to 12.5mm wheel spacers.
• 45mm Shank: Designed for wide-stance aggressive fitments with 15mm wheel spacers.
• 50mm Shank: Formulated for wide-track builds utilizing 18mm to 20mm wheel spacers.

Hot-Forged Heads & Fatigue-Resistant Rolled Threads

Machined from aerospace-certified Ti-6Al-4V (Grade 5) titanium with hot-forged heads and rolled threads. Unlike cut threads that create micro-notches where stress cracks initiate under heavy braking torque, thread rolling burnishes the root radius and maintains continuous grain structure, yielding exceptional shear capacity and fatigue life.

Compatibility with BMW M14 × 1.5 Platforms

Direct fitment for BMW models using M14 × 1.5 thread pitch with 60° cone seats, including:

• BMW X-Series: X5 (E70, F15), X6 (E71, F16)
• BMW 7 Series: E65, E66, F01, F02
• European Aftermarket: Custom hubs, studs conversions, and European sports sedans specifying M14 × 1.5 conical seat hardware

Note: For BMW models utilizing M14 × 1.25 (such as F30 3-Series, F80 M3, F82 M4, G20, G80), please select our M14 × 1.25 specific listing.

Specifications & Dimensions

Material: Certified Aerospace Ti-6Al-4V (TC4) Titanium Alloy, Grade 5
Thread Diameter: M14
Thread Pitch: 1.5mm Metric Coarse
Available Shank Lengths: 28mm, 35mm, 40mm, 45mm, 50mm
Seat Type: 60-Degree Conical (Cone / Taper) Seat
Head Style: Standard 17mm External Hex
Head Outer Diameter: 23mm
Head Height: 21mm
Weight: ~39g (28mm), ~43g (35mm), ~47g (40mm), ~50g (45mm), ~54g (50mm)
Tensile Strength: ≥ 950–1050 MPa
Available Finishes: Natural Titanium, PVD Vacuum-Coated Gold, Rainbow, Burn Blue, PVD Deep Black

Installation & Torque Guidelines

Clean wheel hub threads thoroughly of dirt, old locktite, and rust before installation. Hand-thread each bolt to ensure at least 6.5 to 7 full thread turns of thread engagement into the hub before torquing. Apply a thin film of quality anti-seize paste or copper lubricant to the threads (avoiding the conical seat face) to prevent galling under severe track brake heat. Torque in a star pattern with a calibrated manual torque wrench to 120–130 N·m (88–96 lb-ft). Re-check torque after the first 100 km (60 miles). Never use pneumatic impact guns. To understand why rotating fastener weight matters to handling dynamics, read our technical resource: The Science of Unsprung Weight: Why Titanium Lug Bolts Matter for High-Performance Cars.