Project Description

BONOSS Forged Lightweight Plus Wheel Spacers 15mm for BMW 5 Series 525i (2)

Yesterday, this BMW 5 Series 525i installed BONOSS Forged Lightweight Plus Wheel Spacers, front 15mm (3/5 inch), PCD 5×112, CB 66.5 together with BONOSS Forged Grade 12.9 Extended Wheel Bolts. If you would like to bolt up wheels that are made with a bigger center diameter for your car, then wheel spacers can be your most cost-effective option. The hub-centric design makes a snug connection between the axle hub and the wheels, meaning no gap, no vibrations, fewer stress loads and more service life range. Besides, by pushing out the wheels to an ideal distance, wheel spacers give your car a more aggressive exterior as well as a better aerodynamics body. They fit perfectly with the wheels, due to the 0.02mm precise process. (Thanks FFC for providing these pics)

The BMW 5 Series 525i is one of the most popular luxury vehicles in the world, complete with compact dimensions, new styling, exquisite interior, comfortable seats, and expanded cabin. It has a potent powertrain, a 252-hp 2.0-liter twin-turbo engine, providing 258 lb-ft of torque, an eight-speed automatic transmission, offering smooth, sharp handling. The best bit with any 5 Series is how it drives, and BMW was always not to disappoint here. The steering is firm and precise, body control is brilliant and the handling is anything but pleasant.

BONOSS Forged Lightweight Plus Wheel Spacers 15mm for BMW 5 Series 525i (3)
BONOSS Forged Lightweight Plus Wheel Spacers 15mm for BMW 5 Series 525i (4)
BONOSS Forged Lightweight Plus Wheel Spacers 15mm for BMW 5 Series 525i (5)
BONOSS Forged Lightweight Plus Wheel Spacers

Are wheel spacers safe on BMW 5 Series 525i?

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 6061-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 vibration, no annoying noise, less energy loss, less fatigue damage, longer service life.

Why do you need extended wheel bolts?

Extended wheel bolts (also called longer wheel bolts, extended lug bolts) are designed with longer thread lengths to allow full thread penetration with wheel spacers or wider aftermarket rims of a different offset. 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 all thoroughly tested and certified by SGS, TUV authoritative institutions, truly guarantee safety.


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 5 Series 525i uses front 15mm (3/5 inch), PCD 5×112, CB 66.5.
  • 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 5 Series 525i 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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