Twenty millimeters of spacer is a serious change in stance, and it needs serious hardware. With that much aluminum between the wheel and hub, your factory bolts are nowhere near full engagement.
Dinan 50mm lug bolts (part number D220-0014) are M12x1.5 cone seat bolts for use with 20mm spacers on E-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 50mm M12x1.5 Lug Bolts
Lug bolt length depends on how thick your spacer is, and Dinan matches each length to specific spacer sizes. These 50mm bolts are for 20mm spacers only. Too short and you lose thread engagement. Too long and the bolt can bottom out behind the hub. If you are running a different spacer, ask us which Dinan length matches it before you order.
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 first. Construction is steel with a black zinc coating for corrosion resistance. Sold by AutoTecknic, an authorized Dinan dealer.
What's Included
- 10 x Dinan lug bolts, M12x1.5, cone seat, 50mm, black
Key Features
- M12x1.5 thread, the pitch Dinan specifies for BMW E-chassis
- OEM-style cone seat
- 50mm length, for use with 20mm spacers
- Steel construction with black zinc coating
- Set of 10 (one axle); order two sets for four corners
Vehicle Fitment
Dinan specifies M12x1.5 bolts by chassis family. Use this 50mm length only with 20mm spacers on:
- BMW E-Chassis: 5x120 bolt pattern, M12x1.5 lug bolts
Exceptions do apply. Not for F or G-chassis BMWs (M14x1.25 thread), including the F9x M5 / M8 and F48 X1 / F39 X2, and not for wheels with a ball or flat seat. Confirm your car's bolt thread before ordering.
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.
