75mm Wheel Stud Conversion Kit — BMW F-Series (1 / 2 / 3 / 4 Series incl. M2 / M3 / M4) | M14×1.25 → M14×1.5

Replace the factory BMW wheel bolts with a 75mm stud-and-nut setup designed for easier wheel changes and repeated Street + Track use on compatible BMW F3X and F8X applications.

The conversion stud uses an M14 × 1.25 thread at the BMW hub and transitions to M14 × 1.5 on the exposed wheel-nut side. This retains the correct hub-side interface while using the coarser M14 × 1.5 thread at the frequently removed wheel-nut interface.

Why convert to wheel studs?

• Faster, easier wheel changes — hang the wheel directly on the studs instead of supporting it while aligning and starting factory wheel bolts.
• Dual-thread conversion design — M14 × 1.25 hub-side thread with M14 × 1.5 wheel-side thread.
• Ideal for repeated wheel changes — suited to enthusiast and track-day vehicles where wheels are regularly removed.
• 75mm stud length — provides additional usable length for performance wheel setups and compatible spacer combinations.
• Open-ended wheel nuts — allow stud protrusion and make thread engagement visible.
• Internal Allen drive — allows straightforward installation of the studs into the hub.

Stud construction

• Grade 10.9 steel
• Black phosphate coating for a durable, uniform finish with added corrosion protection
• Hub thread: M14 × 1.25
• Wheel-nut thread: M14 × 1.5
• 75mm overall stud length

Kit contents

• 20 × Grade 10.9 black phosphate conversion wheel studs
• 20 × open-ended M14 × 1.5 wheel nuts
• Wheel nut finish: Black or Chrome
• 19mm wheel nut hex

Fitment

Designed for compatible BMW F-Series 1, 2, 3 and 4 Series applications, including F-Series M2, M3 and M4 models, using M14 × 1.25 hub threads. Verify vehicle-specific hub threads, wheel-nut seat, wheel and spacer requirements before installation. Wheel, spacer and stud protrusion should always be checked for adequate thread engagement and clearance before use.

Street + Track

Part of the E9X AutoHaus Street + Track range. Developed for enthusiasts who drive their cars on the road, work on them regularly and need wheel hardware suited to frequent wheel changes and track-day use.