Project Description


Performance upgrade! Last Monday, this Audi S4 B9 installed BONOSS Forged Lightweight Plus Wheel Spacers, front/rear 12mm(0.5 inches), PCD 5×112, CB 66.5 together with BONOSS Forged Grade 12.9 Extended Wheel Bolts. Both of them are specifically manufactured to fit this vehicle and improves handling performance, moreover, achieving an excellent look. They match perfectly with the Audi wheels, due to the 0.02mm precise process. It also allows for installing larger wheels and tires without breaking the fender. These spacers and bolts are specifically engineered to give your car better cornering, aerodynamics, and look. (Thanks IGNITION PERFORMANCE for providing these pics)

The Audi S4 B9 is one of the most popular top-rated 4-door sedans in the world, complete with a compact design, luxurious interior, comfortable seats, and a modern cabin. The B9 S4 is powered by a turbocharged four-cylinder engine, delivering 354 hp at 6400 rpm, 369 lb-ft torque at 1370 rpm, an eight-speed automatic transmission, offering smooth, sharp switch and it is Quattro all-wheel drive. The best bit with this B9 is the driving experience, and Audi was always not to disappoint here. The steering is precise and direct, body control is excellent and the handling is anything but enjoyable.


How do wheel spacers work?

Wheel spacers are a kind of wheel accessories which are used to create necessary distance on the inner portion of the wheel for clearance problem with brakes, tie rods and other suspension components. That means they allow for installing bigger wheels and tires as well as larger brake calipers without breaking the fender. When your wheels do not have enough offset. A wheel spacer will compensate for proper offset by pushing the wheel farther away from the vehicle hub. Besides, hub-centric wheel spacers can transform a lug-centric wheel (one that centers by fastening the wheel lugs rather than a hub-specific mounting surface) into a hub-centric wheel.

Why do extended wheel bolts do?

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 Audi S4 B9 uses front/rear 12mm(0.5 inches), 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 Audi S4 B9 uses ball 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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