Project Description


A week ago, this BMW 3 Series 330i G20 installed BONOSS Forged Lightweight Plus Wheel Spacers, front 8mm (2/5 inch), rear 12mm (1/2 inch), PCD 5×112, CB 66.6 together with BONOSS Forged Grade 12.9 Extended Wheel Bolts. Why do wheel spacers do? It allows for installing larger wheels and tires without breaking the fender. And the owner of this 330i would like to mount new BBS wheels. Wheel spacers can correct the wrong ET/offset, keeping the wheels attached on the vehicle properly. These spacers and bolts are specifically engineered to suit this vehicle and intent to improve handling performance, moreover, achieving an excellent look. They match perfectly with the vehicle hub, due to the 0.02mm tolerance precise process. (Thanks JC CENTER for providing these pics)

This BMW 3 Series 330i G20 is a high-performance luxury sports sedan. The potent power, grand interior, and good fuel economy make it stand in the top place of luxury sports car rankings. The all-new G20-generation is powered by a 255-horsepower, turbocharged 2.0-liter four-cylinder engine, delivering 190kW at 6500rpm, a maximum torque figure of 400Nm, an eight-speed automatic transmission, offering smooth, sharp shifts. It provides an enjoyable and stable drive experience, effortless to deal with different road situations.

BONOSS Forged Lightweight Plus Wheel Spacers for BMW 330i G20 Black (11)
BONOSS Forged Lightweight Plus Wheel Spacers for BMW 330i G20 Black (12)

Are wheel spacers bad for your BMW 3 Series 330i G20?

Exactly NO. The wheel spacers are a kind of vehicle wheel accessories used to create proper clearance for correcting the wrong offset. That means they allow for installing bigger wheels and tires as well as larger brake calipers without breaking the fender. The owner of this BMW 3 Series 330i G20 would like to mount these BBS aftermarket wheels. However, these wheels are made with a bigger CB diameter, meaning the wheels are lug-centric, easily to cause vibration. Installing proper sizes of wheel spacers can correct the ET, turn the lug-centric wheels into hub-centric wheels, eliminating vibration, improving handling performance.


BONOSS Forged Grade 12.9 Extended Wheel Bolts

After installing wheel spacers, the stock wheel bolts will not be long enough, reducing the number of laps for threading. In the case of intense driving, it will cause kinds of security issues. Thus, need a new set of extended bolts. High-quality bolts for a high-end vehicle. BONOSS Forged Grade 12.9 Extended Wheel Bolts applied SCM440 high strength steel material, which provides extremely high performance. The thread is perfectly fit the OEM hub, ensuring a firm fastening. The tensile strength is higher than 1200 Mpa, meaning they can bear numerous stress cycles without damage.

Addtional Information:

  • BONOSS wheel spacer thickness can be customized flexibly, which is compatible with most vehicles. Thus, if you would like different sizes of wheel spacers, feel free to contact us. This BMW 3 Series 330i G20 uses front 8mm (2/5 inch), rear 12mm (1/2 inch), PCD 5×112, CB 66.6.
  • The extended bolts are spacer structure design, which effectively eliminates the bolts loosening and abnormal sound caused by the PCD hole coaxially deviation between hub and shaft head. This BMW 3 Series 330i G20 uses conical seat bolts. If you would like a set of extended bolts, please ensure the seat type of the bolts is suitable for threading tightly. And, if you don’t know the proper length, you are welcomed to contact our tech staff freely.
  • Each BONOSS product is printed with the logo of “BONOSS”. This offers an easy method to distinguish other fake and inferior products. At the same time, it also provides a way to find our after-sales service. Our products are 10 Years Limited Warranty (new products with 12 months warranty), which is an excellent and cost-effective choice for your car upgrades.

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