BONOSS Forged AL7075-T6 Hubcentric 4 Lug to 5 Lug Wheel Adapters 4×100 to 5×114.3 for VW Golf, Polo Mk1/Mk2 1974-1992, Cabrio, Caddy, Passat

1. What’s the data of my BONOSS forged VW 4 Lug to 5 Lug aluminum wheel spacers?

The data of VW 4 Lug to 5 Lug wheel spacers is Bolt Pattern (PCD): 4×100 to 5×114.3, Center Bore (CB): 57.1 to 60.1, Thread: M12x1.5. These items are also compatible with vehicles in the same bolt pattern, center bore diameter, and thread size as VW Golf MKⅠ/MKⅡ 1974-1998, Polo 1975-2001, Passat 1973-1997, Caddy 1979-2003, Vento 1991-1999… For details, please check Are these wheel spacers compatible with my vehicle.

2. Why should I choose BONOSS VW Golf/Polo/Passat/Caddy 4 Lug to 5 Lug wheel spacers?

Since 2007, BONOSS has been committed to producing high-quality, high-safety, and high-stability automotive wheel accessories (wheel spacers, wheel bolts, wheel nuts, etc.). We pay attention to the safety and quality of VW Golf/Polo/Passat/Caddy wheel spacers and other accessories. BONOSS has over 10 years of professional design and manufacturing experience, trusted by more OEM brands and professionals. We have sufficient inventory to ensure faster delivery, and customize wheel spacers only in 3 days. Professional pre-sales consultation will solve your confusion, please feel free to contact us, after-sales warranty for 10 years will be more rest assured. BONOSS wheel spacers provide higher performance, more additional functions, fast customized service, and friendly service while maintaining a more competitive price, which is your best choice.

3. Are BONOSS VW 4 Lug to 5 Lug wheel spacers safe?

Generally, wheel spacers are made of steel or aluminum. They are just the automobile accessories installed between the assembly hub and wheel. As long as you use high-quality VW Golf/Polo/Passat/Caddy wheel spacers and install them properly, they are safe. Take the VW Golf/Polo/Passat/Caddy 4 lug to 5 lug wheel spacers as an example, we use forged AL7075-T6 material (tensile strength ≥572Mpa), modern CNC machining by 0.02mm tolerance. All of our products have got more than 50 SGS TUV authoritative test reports. Compared with those cheap casting wheel spacers, BONOSS forged 4 lug to 5 lug wheel spacers are safer, higher performance, and more professional in design. We believe more professional production offers more value for customers. For details, please check Are Wheel Spacers Good or Bad.

4. Why do I need BONOSS multi-stage hub centric wheel spacers for my VW Golf/Polo/Passat/Caddy? 

VW hub centric wheel 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 and ensuring safer driving. Compared with an ordinary hub centric. BONOSS uses the multi-stage hub centric design, which means that multi-stage hub-centric can make the spacers more closely fitted to the wheel hub, greatly reduce the vibration of high-speed caused by the inaccurate hub centric. Besides, they can also be used to change the center diameter of your car, making it possible to install wheels with different center diameters to your vehicle properly, transforming lug-centric wheels into hub centric wheels. For details, please check Why do You Need Wheel Spacers with Hub Centric Rings.

5. What are BONOSS VW Golf/Polo/Passat/Caddy wheel spacers made of?

BONOSS forged 4 lug to 5 lug wheel spacers for VW Golf/Polo/Passat/Caddy are made of high-grade 7075-T6 aluminum alloy. They are formed by withstanding continuous strong pressure that improves the strength of the wheel spacers. And the aluminum alloy has many excellent characteristics, such as high strength, wear-resistance, impact resistance, and high-temperature resistance, and performs good mechanical properties: Tensile Strength≥572Mpa, Yield Strength≥503Mpa, and Failure Elongation≈11%. Compared with ordinary AL7075 materials, the tensile strength and yield strength are about five times higher. BONOSS insists on producing professional forged wheel spacers, which are safer, more professional. For details, please check How to Choose Safe Wheel Spacers.

6. What’s the performance of the BONOSS forged grade 12.9 wheel bolts on VW Golf/Polo/Passat/Caddy wheel spacers? What’s the special meaning of BONOSS engraved?

BONOSS forged grade 12.9 wheel bolts are made by the forging process which brings excellent mechanical and physical properties. Each of them is engraved with “B”, which means that these are manufactured by BONOSS own factory, the quality is guaranteed. They have achieved ISO standard grade 12.9, tensile strength≥1,282Mpa, ultimate tensile load≥152,000N, hardness (HV)≥395, NSS≥500H, two million times limited life range test without damage… They are strong enough to use in daily driving, off-road, and other scenes. For details, please check How to Improve Wheel Spacer Safety.

7. Can I customize VW Golf/Polo/Passat/Caddy wheel spacers only in 3 days?

BONOSS owns an independent OEM factory, so that custom wheel spacers can be completed only in 1-3 days. OEM/ODM is available. If you’re looking for an unusual thickness or bolt pattern conversion to fit custom wheels that won’t work with standard wheel spacers, look no further than BONOSS custom-made wheel spacers for your VW Golf/Polo/Passat/Caddy. BONOSS offers non-normal thickness customized service, a minimum of 0.1″ (3mm) thick, a maximum of 6.4″ (160mm) thick are available. There are a large amount options with our customized PCD conversion wheel adapters, etc. 5×112 to 5×120 adapters, 5×112 to 5×130 adapters, 5 lug to 6 lug adapters, and thread sizes, thicknesses, and bolt patterns are customized to your exact request on wheel adapters. For details, please check BONOSS Custom Wheel Spacers Service.

8. Do you have any SGS TÜV test reports of  BONOSS forged VW Golf/Polo/Passat/Caddy wheel spacers?

SGS 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 SGS, TÜV authoritative tests, and all achieved excellent scores.BONOSS forged grade 12.9 extended wheel bolts have passed the SGS 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. For details, please check BONOSS Wheel Spacers Quality Certificated.

9. What are the benefits of the knurling design on my BONOSS forged 4 lug to 5 lug VW Golf/Polo/Passat/Caddy wheel spacers?

The knurling design can enhance the aesthetics of the VW Golf/Polo/Passat/Caddy wheel spacers by introducing an attractive pattern to the side surface. 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 VW Golf/Polo/Passat/Caddy 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. For details, please check Are Wheel Spacers A Good Idea.

10. How do VW Golf/Polo/Passat/Caddy wheel spacers affect handling?

Installing wheel spacers is a cost-effective way to increase the wheel track by pushing your wheels away from the hub. A wider track means better traction, allows you more stable turning, improving the handling of your vehicle, even driving in bad weather, it won’t lose its grip. Moreover, most track racing cars will use every millimeter of wheel space available in their design for the highest performance and the best exteriors. With VW Golf/Polo/Passat/Caddy wheel spacers on, you can fill the gap in your fenders and get a more aggressive and powerful look. Meanwhile, BONOSS forged 4 lug to 5 lug wheel spacers are accurate to 0.02mm, a more perfect fit to the wheel hub, which means that high-speed vibration is reduced, and offers a smoother driving experience. For details, please check Wheel Spacer Handling Improvement.

11. Why do I need VW Golf/Polo/Passat/Caddy wheel spacers fit for aftermarket wheel rims?

An excessive positive offset will cause the inner edge of your rims and tires to rub against the suspension components. In this case, wheel spacers can create the clearance needed to avoid friction and correct the offset by pushing away from the vehicle hub. They can also be used to change the bolt pattern and center bore diameter of your car. In this way, modified rims with different data can be installed correctly. For example, BBS wheel rims, HRE wheel rims, WORK wheel rims, APEX wheel rims, etc. BONOSS has thousands of successful cases of manufacturing spacers for aftermarket wheel rims issues. Compared to those cheap casting spacers, BONOSS forged high-grade wheel spacers are safer and more professional. For details, please check When to Use Wheel Spacers for Aftermarket Wheels.

12. Can BONOSS VW Golf/Polo/Passat/Caddy 4 lug to 5 lug wheel spacers solve the clearance problems?

Higher-performance brake kits are often bigger than the stock parts. A wheel spacer provides the space needed for larger calipers that cannot fit in the factory wheel space. By pushing out the wheels, you can get a larger ideal gap of the brake caliper without having to rub it when installing the wheel. These items function as Brembo wheel spacers, EBC wheel spacers, AP racing wheel spacers, Bosch wheel spacers, etc. And for safety and quality, purchasing from a professional manufacturer is trustable. BONOSS has thousands of successful cases of manufacturing spacers for big brakes issues. Compared to other cheap casting wheel spacers, BONOSS forged 4 lug to 5 lug wheel spacers are safer and more professional. For details, please check When to Use Wheel Spacers for Big Brake Kit.

13. What do VW Golf/Polo/Passat/Caddy wheel spacers do for wide-body kit/aero kit?

The wide-body enclosure usually includes large brake calipers and large wheel hub modifications. Wheel spacers allow you to install larger wheels and larger brakes which is a great safety upgrade especially if you plan to take your widebody car onto a track. Installing wheel spacers on VW Golf/Polo/Passat/Caddy is one of the easiest and most cost-effective options to get low and wide as well as to get flush the fender flares. Properly filled wheel arches can really make your widebody builds look wonderful. These items function as Mansory widebody kits wheel spacers, Duraflex widebody kits wheel spacers, Liberty Walk widebody kits, etc. BONOSS insists on manufacturing safer and more professional wheel spacers, which is a good choice for your excellent widebody kits. For details, please check When to Use Wheel Spacers for Wide-body Kit.

14. Can wheel adapters solve the offset problems for installing other vehicle wheels on my VW Golf/Polo/Passat/Caddy?

In a sense, a wheel adapter is also a wheel spacer. Wheel spacers are used for clearance problems with brakes, tie rods, and other suspension components, to push the wheels outward and make the wheels more flush with the fender. Wheel adapters do all the same things as wheel spacers do. However, wheel adapters can change the bolt pattern and center bore diameter to allow you to bolt up wheels that are not made for your car. Installing wheel spacers can help you perfectly solve the problem of the wheels. To have better turning performance, smoother driving experience, and fuller appearance. For details, please check Do you need wheel spacers or wheel adapters.

15. How thick VW Golf/Polo/Passat/Caddy 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. Too thin, you will still have wheel/caliper interference. Too thick, and your tires will hit the fenders. Use proper size of spacers not only ensure safety but also avoid breaking your local laws and regulations. Currently, BONOSS provides 4 Lug to 5 Lug wheel spacers with 18mm and 20mm thickness for you to choose. For more information, please check How to Measure Wheel Spacers for My Vehicle.

16. How to install BONOSS VW Golf/Polo/Passat/Caddy wheel spacers?

The wheel spacers installation is an easy job for you. Hopefully, the instructions below can help those of you keen to install wheel spacers yourself. For more details, check on How to Put Spacers on Wheels.

17. Where can I buy BONOSS wheel spacers near me?

BONOSS will have operated stores around the world, you can find the nearest operated store through Wheel Spacers Near Me, or place an order on our official website to purchase our products.