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20mm Centerbore Conversion Spacers

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ECS Tuning Wheel Spacer/Hub Adapter & Bolt Kit - 20mm - 74.1mm to...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
ECS - Corporate Logo
T#:380476
Part#: 3990ECS01-20KT
In Stock
Sale - Save 30% $ 164.99

This product was last offered at the strikethrough price on
05-02-2026

$ 115.28 USD
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Sale - Save 30%
$ 164.99

This product was last offered at the strikethrough price on
05-02-2026

$ 115.28 USD
Free Shipping

Drastically improve the looks of your vehicle while improving your vehicle's handling characteristics and/or easily adjust your wheel fitment to allow for the proper clearance when installing parts such as new wheels, big brake kits, or lowering suspension components.Interference from components such as shocks, springs, or control arms are a common issue when installing wheel that are not a direct OE size replacement. By moving your wheels a few millimeters each, you can give yourself enough clearance for proper wheel fitment and give your car a wider stance in the process.

ECS Tuning wheel spacers are constructed of high quality 6061-T6 aircraft grade aluminum and are specifically designed by in-house engineers and cnc machined to exact standards, ensuring the best fitment possible. By carefully measuring the OEM wheel hubs and bore dimensions, these spacers mount with minimal clearance to prevent any vibration, retaining the stock-like vibration free operation. 

This kit includes wheel bolts that are lab tested to meet or exceed ISO 898 class 10.9 mechanical and physical properties to ensure perfect fastening of the wheel to the hub with no issues or potential to snap under aggressive driving conditions.

ECS Tuning is a performance and genuine parts provider that designs their ECS Tuning branded aftermarket automotive parts in-house to ensure the highest quality and affordability possible. Every part's design is subjected to a rigorous test fit and stress test period to guarantee proper fitment and continued reliability for years to come.

This item fits the following BMWs:
1997-2003 E39 BMW 525i 528i 530i 540i M5

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E39 20mm H&R Wheel Adapter Set To Fit E36/E46 Wheels To E39 5-ser...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!
H&R - Corporate Logo
T#:1600
Part#: 4075740725
In Stock
9% off MSRP $ 188.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 171.99 USD
Limited Qty Sale
Free Shipping
9% off MSRP
$ 188.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 171.99 USD
Limited Qty Sale
Free Shipping
20mm = .79"
5/120 bolt pattern; 72.5 center bore
DRA type = spacer fits in between the wheel and the hub. The spacer is bolted to the hub with special bolts (included). Your wheel bolts to the spacer.
Hubcentric = Yes, this spacer comes with a new hubcentric lip for the wheel to rest on

These special 20mm wheel spacers allow an E39 owner to use E36 or E46 wheels on their car. These spacers are the correct 74.0mm center-bore on the inside and 72.5mm center bore on the outside for the wheel to sit on. This spacer will reduce the wheel offset by 20mm. This difference in center bore has left a lot of E39 owners out in the cold when it came to wheel options (especially in the winter). H&R has worked up this easy solution. This is a DRA spacer system - the spacer bolts to the hub with special bolts; your wheel then bolts to the spacer.Note about E36 and E46 wheels � there is a large range in offsets on these wheels. The lowest offset we have seen is 35mm; the highest offset is 49mm. The desired offset for the E39 is 20mm, depending on wheel width. H&R makes these wheel adapters in 15mm and 20mm thicknesses. If your E36/E46 wheel is above 43mm in offset, you will run into the problem of the wheel tucked in too far. When looking at E36/E46 wheels, try to stay in the 35-43mm offset range.Spacers are sold in pairs (1 axle). This item fits the following BMWs:
1997-2003 E39 BMW 525i 528i 530i 540i M5
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Turner BMW E39 20mm Wheel Hub Adapters - E36/E46 Wheels for E39 5-ser...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Turner Motorsport - Corporate Logo
T#:340498
Part#: TWH9905K20
Ships on Oct 13, 2026
Starting at $ 184.99 USD
Free Shipping
Starting at $ 184.99 USD
Free Shipping

20MM (.79 inch) Wheel Spacers Adapters for BMW E39 5-series

The E36 and E46 chassis have a lot more wheel options than the E39 5-series. That's because BMW chose to use a larger center bore for the E39 wheel than any other BMW model and many wheel manufacturers are reluctant to make E39-specific wheels. These adapters are the correct E39 hub size on the inside and the correct E36/E46/E9X wheel size on the outside with a 20mm thickness. This is good because the E39 needs a low wheel offset and 3-series wheels are all high offset so a spacer would be needed anyway. A Hub Adapter Spacer is the perfect solution! You will need match the spacer to the new wheels (also taking the new wheel width into account) but call us for any fitment questions. Longer wheel bolts or wheel studs are required.

These latest generation of the Turner Motorsport Wheel Spacers represent a total redesign of the wheel spacer concept - a ground-up, clean sheet design based on our years of BMW service and motorsports. We took everything we have learned from our service technicians, customers, and race team crew and built the spacer to beat all spacers. We've been in the BMW wheel spacer business probably longer than anybody and when it came time to make our own spacers, a basic spacer design just wouldn't do. We had to make a spacer that is light weight (for lower unsprung mass), has a tough and durable coating to last through our New England winters, is easily removed (your mechanic will thank you), and is precisely engineered and manufactured for a proper fit on the hub and in the wheel. You won't find a better engineered wheel spacer on the market!

 

Turner Wheel Spacer Features

+ hub-centric design with hub-centric lip

+ precise tolerance fitment thanks to CAD process and CNC mill machine

+ aerospace grade aluminum - light weight but very strong with a high resistance to corrosion

+ additional military-spec hardcoat for further corrosion resistance

+ innovative Quick Release pockets for easy removal (better than a chamfered back edge)

+ laser engraved size and part number for easy identification

+ stealthy anthracite or black color

+ Turner Motorsport track and street tested!

+ Made in the USA

 

Wheel Spacer Tech & FAQ

How To Measure for Spacers

Wheel Spacer Encyclopedia - everything you wanted to know

 

Spacer Specs

bolt pattern:5 x 120

inside center bore:74.1mm

outside center bore:72.6mm

hubcentric?yes

wheel pad size:normal

 

Extended Wheel Bolts

Required for all BMW wheel spacers is a set of longer wheel bolts or wheel studs. Spacers cannot be used with stock bolts. Our extended lug bolts are a very high quality and high grade steel lug bolt (grade 10.9). We offer two finishes to get you just the right look with your wheels - black zinc to maintain a factory BMW appearance or a bright zinc nickel finish to go with polished wheels. Zinc finishes are designed to withstand 700 hours of salt spray testing.



This item fits the following BMWs:
1997-2003 E39 BMW 525i 528i 530i 540i M5

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