A 2mm or 3mm spacer seems too thin to matter. It matters to the bolt. That is 2 or 3mm of thread you no longer have in the hub, and thin spacers are exactly where people reuse factory hardware and hope for the best.
Dinan 30mm lug bolts (part number D220-0002) are M14x1.25 cone seat bolts for use with 2mm and 3mm spacers on F and G-chassis BMWs. Same thread and seat style as your factory bolts, finished in black zinc. Set of 10, enough for one axle on a 5-lug BMW.
Choosing the Right Length: Dinan 30mm Lug Bolts
Lug bolt length depends on how thick your spacer is. Dinan's ladder is simple: 30mm bolts for 2mm and 3mm spacers, 33mm for 4mm and 5mm, 40mm for 10mm and 12mm, 45mm for 15mm and 17mm. These 30mm bolts are the match for the thinnest spacers in the range.
The bolt also has to match your wheel's seat. These use an OEM-style cone seat. BMW factory wheels are typically cone seat, but some aftermarket wheels use a ball seat or need different hardware, so check your wheel spec before ordering. Construction is steel with a black zinc coating for corrosion resistance and a finish that disappears behind dark wheels.
What's Included
- 10 x Dinan lug bolts, M14x1.25, cone seat, 30mm, black
Key Features
- M14x1.25 thread, the pitch Dinan specifies for BMW F and G-chassis
- OEM-style cone seat
- 30mm length, for use with 2mm and 3mm spacers
- Steel construction with black zinc coating
- Set of 10 (one axle); order two sets for four corners
Vehicle Fitment
Dinan specifies M14x1.25 bolts by chassis family. Use this 30mm length only with a 2mm and 3mm spacer on:
- BMW F-Chassis: 5x120 bolt pattern, M14x1.25 lug bolts
- BMW G-Chassis: 5x112 bolt pattern, M14x1.25 lug bolts
- Dinan-listed exceptions using G-chassis 5x112 fitment with M14x1.25 bolts: F90 M5, F91 / F92 / F93 M8, F48 X1, F39 X2
Not for E-chassis BMWs (M12x1.5 thread), wheels with a ball or flat seat, or cars running a spacer other than 2mm and 3mm.
Installation Notes
Install these at the same time as your spacers. No special tools beyond a torque wrench and the correct socket. Thread one bolt fully by hand through the spacer before torquing anything, to confirm engagement.
- With the car supported on jack stands, fit the spacer and wheel to the hub.
- Thread all five bolts in by hand until the cone seats contact the wheel.
- Snug in a star pattern, lower the car and torque to your BMW's factory wheel bolt specification.
- Recheck torque after the first short drive.
