Project Description


Performance upgrades! A week ago, this BMW 3 Series 325i G20 installed BONOSS Forged Lightweight Plus Wheel Spacers, front/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? The wheel spacer is sandwiched between the car’s wheel and hub. By pushing the wheel away an ideal distance from the hub, it creates spaces between the wheel and hub. If your new wheels set up do not have the proper offset, it will cause the wheel to rub against the internal suspension components. (Wheels will stick in too much). Installing wheel spacers can create extra clearance to push the wheels outward to correct the wrong offset. (Thanks to the owner for providing these pics)

This BMW 3 Series 325i 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 181-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.


Are wheel spacers safe on BMW 325i G20?

Technically, yes, they are totally safe. One of the essential parts of wheel spacers safety is the material. BONOSS forged lightweight plus wheel spacers applied Forged 7075-T6 Aluminum Alloy, which is high strength, great toughness, and good corrosion resistance. And the Black Hard Coat Anodizing process provides the surface with better abrasion resistance, flame resistance and smoother and harder finish protection than regular paint or metal plating. They are manufactured with a tolerance of 0.02mm, which means perfectly fit, no additional force, no annoying noise, less energy loss, less fatigue damage, longer service life.

Why do you need extended wheel bolts?

Any time you run wheel spacers, extended wheel bolts are a must option to properly secure the wheel to the vehicle hub. Without the proper thread length, the stock lug bolts will not allow penetrating the vehicle hub threads completely which can cause car shaking or safety risk. BONOSS Forged Grade 12.9 Extended Wheel Bolts are made by the forged process. The forging process offers lots of advantages over other manufacturing processes for wheel bolts, such as high tensile strength and tough, hard and durable, better wear resistance and higher fatigue strength, elimination of porosity, evenly and tight internal structure, good polishing and finishing surface characteristics.

BONOSS Forged Grade12.9 Extended Wheel Bolts

Additional 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 325i G20 uses front/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 325i 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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