After installing BMW 5mm wheel spacers, a set of new extended wheel bolts is necessary hardware. Because the wheel and tire assembly must be held evenly and securely to the wheel hub by the wheel bolts. Now you have added 5mm space between the wheel and hub assembly, your OEM wheel bolts can’t provide enough thread for safely securing the BMW 5mm wheel spacers and wheels. If the lug bolts are not tightened securely, it can cause the wheel to vibrate, loosen and wobble.
This can damage or even break the BMW 5mm wheel spacers and wheel bolts, potentially causing the wheel to separate from the vehicle. The general rule of thumb is that the thread length must be equal to or greater than the diameter of the bolt itself. Giving an example, an M14 wheel bolt would need at least 14mm threads to ensure a safe engagement. As a guideline claims, you need at least 7 turns (preferably 8 turns) from start to torque. So, make sure you have the proper number of turns after adding BMW 5mm wheel spacers.
What Extended Bolts Do I Need for BMW 5mm Wheel Spacers?
When it comes to wheel bolts for BMW 5mm wheel spacers, the thread engagement length is critical. It is easy to figure out the proper length (stock bolt length + spacer thickness = extended bolt length). Since aftermarket extended wheel bolts come in various seat types, it is critical that the wheel bolts seat and the wheel lug seat match. Mismatching the seat types could potentially cause the bolt to loosen and the wheel to become insecure in the vehicle.
BONOSS has arranged BMW 5mm wheel spacers and the corresponding extended wheel bolts as a kit for you. BONOSS BMW 5mm wheel spacers are made of forged 6061-T6 or 7075-T6 aluminum alloys. They start as a solid block of billet aluminum. Due to continuous tons of pressure, the internal structure is more compact, adding strength and eliminating any porosity. Therefore, BONOSS forged lightweight plus BMW 5mm wheel spacers are of good strength, toughness, hardness, and corrosion resistance.
Are BONOSS Extended Bolts for BMW 5mm Wheel Spacers Worth It?
BONOSS forged extended wheel bolts for BMW 5mm wheel spacers are made of high-strength SCM440 alloy steel. They have fully SGS, TÜV ISO Grade 12.9 certified, tensile strength≥1,282 MPa, limited life range test≥2,000,000 stress cycles without damage, ultimate tensile load≥152,000N, hardness (HV)≥395. These tire bolts are very high strength. In fact, they are the strongest wheel bolts that we have covered in the automotive world.
Besides, these extended wheel bolts are designed with floating seats. The floating seats are replaceable which allows for a perfect fit on any wheel. They are mainly available in two options depending on lug bolt size: conical seat and ball seat (R13 or R14). Besides, the separate design eliminates the bolts loosening and the abnormal sound caused by the PCD hole coaxially deviation between the vehicle hub and wheels while driving. Since the floating seats are not fixed, they can effectively prevent your beautiful wheels from being scratched by the bolts.