Project Description


Higher performance! Yesterday, this Mercedes-Benz CLA 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. What do wheel spacers do? By pushing out the wheel, you can gain a small amount of clearance for mounting larger brake calipers without wheel scratching. Larger brake calipers bring better braking performance. Wheel spacers offer a cost-effective and efficient solution for your brake system modifications. These spacers and bolts are specifically made to give your car better cornering, aerodynamics, and look. (Thanks SRC AUTO for providing these pics)

The Mercedes-Benz CLA is one of the most popular sedans on the planet, complete with a modern design, exquisite interior, comfortable seats, and an attractive cabin. It offers advanced technology and lavish features to make the ride more enjoyable. The Mercedes-Benz CLA is powered by a  turbocharged engine, delivering 221 hp at 5800 rpm as well as 258 lb-ft of torque. A 7-speed dual-clutch automatic transmission, offering smooth, sharp handling. The steering is firm and fluent, the body control is dynamic and energetic, excellent suitability for road driving.

BONOSS Forged Lightweight Plus Wheel Spacers for Mercedes-Benz CLA 12mm Before
BONOSS Forged Lightweight Plus Wheel Spacers for Mercedes-Benz CLA 12mm After

Are wheel spacers safe for Mercedes-Benz CLA?

Exactly safe. Wheel spacers would only create the necessary distance on the inner portion of the wheel for clearance to solve the clearance problem of brakes, tie rods and other suspension components. If you plan to keep your current wheels and increase the offset of your car for enhancing the handling performance or exterior looks, then wheel spacers will be your ideal choice. Besides, hub-centric wheel spacers can transform a lug-centric wheel into a hub-centric wheel. They are sandwiched by the wheel and vehicle hub. To be considered safe, they will need extended wheel bolts to achieve proper thread engagement.

How to confirm the length of extended bolts?

Generally, it’s easy to figure out the correct size of bolt, all you need to do is to measure the length of your stock bolt then add the thickness of the required spacer, and that will be your ideal extended bolt length. In most cases, you need a bolt that is longer by the thickness of the spacer, for example, your stock bolts are 27mm, the desired spacer is 12mm, then the right size of extended bolts would be 39mm. But there can be exceptions. Considering the critical importance of the length of thread fully engaged in the axle hub, it’s always best to measure from the wheel bolt you’re currently using.

BONOSS-Forged-Grade 12.9-Extended-Wheel-Bolts-for-Audi

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 Mercedes-Benz CLA 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 Mercedes-Benz CLA 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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