• Factory direct, Welcome to be a Distributor, Customized/OEM/ODM Available
• Global Pioneer Active Cooling Technique, Safer
• Forged AL6061-T6 with Tensile Strength ≥ 310 Mpa, Safer
• SO Grade 12.9 Studs with BONOSS Engraved, Strength ≥ 1220 Mpa, Safer
• ISO Grade 10 Nuts with BONOSS Engraved, Strength ≥ 1110 Mpa, Safer
• Over 66 Test Reports by TÜV Certificated, More Professional
• Worry-free 10 Years Warranty, Friendly Customer Service

Important Note: Please confirm these points before buying:
 

3. If the thickness of the wheel spacer is smaller than the length of the original studs, the rims used must allow for small hockets in the mounting surface of the rim. If using rims without enough hockets, the stock studs should be shortened so that they do not extend beyond the thickness of the spacer.

The back of BONOSS Wheel Spacer has specially petal shape grooves. Because the rotation of the spacer makes the external cold airflow efficiently and continuously inside the spacer, while cold air flowing, the heat of the braking system is taken away, thereby achieving the effect of active cooling, improving braking efficiency, and reducing overheating of brakes. This technique maintains the brakes at normal temperature to ensure wheel spacers’ safety and driving security. For a long time, the function of the wheel spacers for cars is single. As a professional spacer designer and manufacturer, BONOSS relies on years of experience and hard work to create the world’s first active cooling technique, diversifying spacers’ functions and increasing the value. On top of that, the production cost of the active cooling technique is almost the same as traditional spacers. So that customers scarcely need to pay extra for this. It is precisely having more functions, higher performance, and more friendly wheel spacers prices that have become the choice of many customers.

2. Why you need hub centric wheel spacers?
Hubcentric spacers offer a better system of support and stability. They are designed to make a snug connection between the wheel and vehicle hub, reducing the high-speed vibration. Based on traditional hubcentric Supra GR spacers, BONOSS has optimized this design to further reducing the chance of high-speed vibration, it is called multi-stage hubcentric design. According to the actual test, the effect of BONOSS multi-stage hubcentric wheel spacers is far better than the common alternatives, which fit more perfectly, safer, and more stable.

3. What’s the performance of the matching wheel bolts of Mercedes Benz wheel spacers? What does “BONOSS Engraved” means?
The matching wheel bolts of BONOSS wheel spacers applied high-strength JIS SCM440 steel material. They have achieved ISO standard grade 12.9, tensile strength≥1,220Mpa, limited life range test≥2,000,000 stress cycles without damage, ultimate tensile load≥152,000N, hardness (HV)≥395, NSS≥500H. And the matching inset lug nuts have achieved ISO standard grade 10, proof load≥1110Mpa, hardness (HV)≥349, NSS≥500H. Many competitors often use other brands of bolts and nuts in pursuit of lowering the cost, and these bolts and lug nuts are often only marked with metric units without brand engraved. In view of this, each BONOSS matching wheel stud, as well as lug nut, is “BONOSS engraved”, meaning these matching wheel bolts are made by BONOSS’s own factory, the quality is guaranteed, customers’ interests are protected, and BONOSS takes the quality responsibility.

4. Are BONOSS wheel spacers safe?
Yes. wheel spacers are just the automobile accessories installed between the assembly hub and wheel, the wheel lugs apply a clamping force to secure the spacer and wheel to the vehicle hub. Just like wheels, tires, and brake systems, as long as you use high-quality wheel spacers and install them properly, they are safe. BONOSS is always concerned about safety. Take the 5×114.3 wheel spacers as an example, we use forged AL6061-T6 material (tensile strength ≥310Mpa), modern CNC machining by 0.02mm tolerance, the multi-stage hub centric design fits the wheel hub better. Meanwhile, the matching wheel studs adhere to ISO standard grade 12.9, and ISO standard grade 10 lug nuts, all of our products have got more than 50 TUV authoritative test reports. Compared with those cheap casting wheel spacers, BONOSS forged active cooling wheel spacers are safer, higher performance, and more professional in design. We believe more professional production offers more value for customers.

5. What are the benefits of the knurling design on my wheel spacers?
The knurling design can enhance the aesthetics of the wheel spacers by introducing an attractive pattern to the side surface. In addition to aesthetics, there are practical features. Knurling patterns can enlarge the side area so that it can contact more air, boost the heat dissipation effect, and reduce the internal stress caused by machining. That means improving the performance, strength, and durability of the wheel spacers. BONOSS aims to provide wheel spacers with more additional functions, safer, higher performance, more professional design, and better installing experience, that is why we insist on independent manufacturing and continuous optimization of the design.

6. Do you have any TÜV test reports of the wheel spacers?
and TÜV Rheinland as the world’s famous testing service companies, standing for safety and quality. To earn customers’ trust, which is also our confidence in product quality. BONOSS has fully passed over 66 ISO standard , TÜV authoritative tests, and all achieved excellent scores.BONOSS forged grade 12.9 extended wheel bolts have passed the 2,000,000 times limited life range test without damage, tensile strength≥1,282Mpa, ultimate tensile load≥152,000N, hardness (HV)≥395, NSS≥500H… By these authoritative test reports, BONOSS truly achieves the quality and professionalism expressed in the form of data and truly guarantees safety. We believe high standard quality management, together with authoritative certification reports is the best way to meet customer and regulatory requirements.

7. What are the benefits of wheel spacers?
After installing BONOSS wheel spacers adapters, the wheel track can be increased, making driving more stable and comfortable. Besides, the roll angle when turning can be reduced, which is making vehicle handling safer. The wheel spacers can push the wheels out suitably so that the wheels are flush with the fenders, the appearance of the vehicle can be fuller and more attractive. At the same time, the problem of wheel adapters and the clash between wheel and brakes can be solved. BONOSS has the world’s first active cooling technique, and the rotation of spacer makes the external cold airflow efficiently and continuously inside the spacer, while cold air flowing, the heat of the braking system is taken away, achieving the effect of active cooling, and improve braking efficiency and drive safer.

8. How thick wheel spacers do I need?
Here is a simple method: use a straight edge such as a metal ruler, place the straight edge on the outermost part of the rims where the wheel comes closest to the fender (preferably the top), then, measure from the outside wheel to the straight edge. This distance is the size spacer you will need to achieve the look that flushes or nearly flushes with the fender line.

9. How much standard torque force of different lug bolts or nuts is?

M12: 113NM(83.3Ft-tb); M14: 140NM(103.5Ft-tb); 1/2-20: 130NM(95.8Ft-tb)

(4) 40mm Mercedes G Class G Wagen G Wagon G Force Wheel Spacers Adapters 5x130

$268.98

2X 35mm 5 Lug Wheel Spacers 5x120 for BMW X5 E70 F15 (07- 17) Front and Rear

$102.55

2X 8mm + Bolts Forged Hub Centric Wheel Spacers for Mercedes W211 W212 W220 W221

$64.55

2X 10mm + Bolts Hubcentric 5x120 Wheel Spacers for BMW 3 Series E36 E46 E90 F30

$69.55