BBS Square Performance Wheel Sets for BMW 3 Series E30 (1984-1991)

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Square wheel sets include a complete set of wheels with identical dimensions for front and rear. Many OE wheels setups run square fitment as it keeps manufacturing costs lower, and offers predictable and even grip levels at all four corners. An added benefit of running a square set is reduced tire costs. Generally tires are cheaper when purchased as a complete set and are much easier to source.

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18" BBS RGR Wheels - Set Of Four
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
BBS - Corporate Logo
T#:26038581
Part#: RG707HDBKKT
Ships in 1 Business Day
$ 4,869.00 USD
$ 4,869.00 USD
18" BBS RGR Wheels - Set Of Four
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
BBS - Corporate Logo
T#:26038582
Part#: RG707HDSKKT
Ships in 1 Business Day
$ 4,869.00 USD
$ 4,869.00 USD
18" Style RG-R Wheels - Square Set Of Four
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
BBS - Corporate Logo
T#:402984
Part#: RG734HDBKKT
Ships on Jun 22, 2026
$ 4,869.00 USD
Free Shipping
$ 4,869.00 USD
Free Shipping

BBS Wheels combine decades of race proven quality and German engineering with stunning good looks. Utilizing the most cutting-edge manufacturing technologies based on a foundation of constant innovation continues to propel BBS into the future.

RG-R style wheels combine a lightweight forged construction with an eye-catching yet tasteful design to bring you some of the finest two-piece wheels on the market. 

Forged wheels are created by crushing a solid block of aluminum into the desired shape using an extreme amount of pressure. This creates a wheel that is incredibly strong while remaining relatively lightweight. Using FEM analysis the engineers at BBS are able to precisely measure and optimize wheel properties before this process even begins. Once the forging process is complete, the meticulous finish work begins.
Back-milling is a process used to optimize the ratio between weight and stability. Using advanced computer analysis and a special CNC milling process the lateral parts that hold the wheel spokes, and are not relevant for stability, are removed. Extensive real-world simulation is used at this point to further ensure that no strength or stability has been lost.
Finally, BBS pays special attention in machining the undercut or back side of the wheel. To machine the undercut, all areas on the inner side of the wheel and the star hub that correspond to weight optimization are processed with special turning or milling tools and excess material is removed to reduce the rotating wheel mass. Special attention is hereby given to the optimization of the inner sides of the spokes and the bolt circle. With the application of these methods, BBS is able to produce more complex forms with increased stability and less material input.
These wheels come in a Diamond Black painted finish with a diamond cut lip and BBS ensures that their paint quality exceeds OE manufacturer specifications for durability and longevity. A final protective clear coat layer ensures that these wheels will be easy to clean and look amazing for years to come.

Please Note: Aggressive fitment, may require fender rolling/pulling.

Specs:

  • 18x8.5 ET38 - qty 4
  • Diamond Black
  • Center Bore: 72.5
  • Bolt Pattern: 5x120
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18" BBS RGR Wheels - Set Of Four
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
BBS - Corporate Logo
T#:26038578
Part#: RS911EDBPKKT1
Ships on Jun 22, 2026
$ 4,809.00 USD
$ 4,809.00 USD

18" BBS RGR Wheels - Set Of Four
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
BBS - Corporate Logo
T#:26038579
Part#: RS911HDSPKKT
Ships on Jun 22, 2026
$ 5,509.00 USD
$ 5,509.00 USD
18" Style RG-R Wheels - Square Set Of Four
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
BBS - Corporate Logo
T#:402985
Part#: RG734HDSKKT
Ships on Jun 22, 2026
$ 4,869.00 USD
Free Shipping
$ 4,869.00 USD
Free Shipping

BBS Wheels combine decades of race proven quality and German engineering with stunning good looks. Utilizing the most cutting-edge manufacturing technologies based on a foundation of constant innovation continues to propel BBS into the future.

RG-R style wheels combine a lightweight forged construction with an eye-catching yet tasteful design to bring you some of the finest two-piece wheels on the market. 

Forged wheels are created by crushing a solid block of aluminum into the desired shape using an extreme amount of pressure. This creates a wheel that is incredibly strong while remaining relatively lightweight. Using FEM analysis the engineers at BBS are able to precisely measure and optimize wheel properties before this process even begins. Once the forging process is complete, the meticulous finish work begins.
Back-milling is a process used to optimize the ratio between weight and stability. Using advanced computer analysis and a special CNC milling process the lateral parts that hold the wheel spokes, and are not relevant for stability, are removed. Extensive real-world simulation is used at this point to further ensure that no strength or stability has been lost.
Finally, BBS pays special attention in machining the undercut or back side of the wheel. To machine the undercut, all areas on the inner side of the wheel and the star hub that correspond to weight optimization are processed with special turning or milling tools and excess material is removed to reduce the rotating wheel mass. Special attention is hereby given to the optimization of the inner sides of the spokes and the bolt circle. With the application of these methods, BBS is able to produce more complex forms with increased stability and less material input.
These wheels come in a Diamond Silver painted finish with a diamond cut lip and BBS ensures that their paint quality exceeds OE manufacturer specifications for durability and longevity. A final protective clear coat layer ensures that these wheels will be easy to clean and look amazing for years to come.

Please Note: Aggressive fitment, may require fender rolling/pulling.

Specs:

  • 18x8.5 ET38 - qty 4
  • Diamond Silver
  • Center Bore: 72.5
  • Bolt Pattern: 5x120
Show More Show Less

18" BBS RG-R Wheels - Set Of Four
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
BBS - Corporate Logo
T#:26071907
Part#: RS911EDBPKKT
Ships on Jun 22, 2026
$ 4,809.00 USD
$ 4,809.00 USD
18" BBS RGR Wheels - Set Of Four
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
BBS - Corporate Logo
T#:26038577
Part#: RG737HDSKKT1
Ships on Jun 22, 2026
$ 4,869.00 USD
$ 4,869.00 USD

18" BBS RI-A Matte Graphite - Square Set
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
BBS - Corporate Logo
T#:5484740
Part#: RIA007MGR1KT
Ships on Jun 22, 2026
$ 4,380.00 USD
Free Shipping
$ 4,380.00 USD
Free Shipping
BBS has been engineering true high performance wheels for more than 50 years. Over the past 50 years, BBS wheels have won over 250 series Championships, ranging from F1, Touring Cars, Prototypes, Silhouette, Open-wheel, World Rally Championships, Hillclimb and Motorcycles. We understand what it takes to engineer wheels and technologies that can not only compete, but can win Championships. Since BBS produces OE wheels for many manufacturers including companies like BMW, Ferrari and Porsche, we understand the true performance requirements along with the proper load rating, tolerances and durability specifications. If your looking for the ultimate wheel for your BMW, BBS should be the first wheel that comes to mind. Gain the performance and status that comes along with BBS wheels. One-Piece Die Forged Aluminum Wheel - BBS Patented Milling Process inside the spoke area - Weight optimized by FEM analysis. Square set of BBS RI-A Matte Graphite 18x8.5 ET34 72.5 CB FPS Rings
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18" BBS RF Wheels - Set Of Four
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
BBS - Corporate Logo
T#:26071913
Part#: RF517DBKKT1
Ships on Jun 22, 2026
$ 3,588.00 USD
$ 3,588.00 USD
18" BBS RG-R Diamond Black - Square Set
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
BBS - Corporate Logo
T#:5471101
Part#: RG794DBKKT
Ships on Jun 22, 2026
$ 4,800.00 USD
Free Shipping
$ 4,800.00 USD
Free Shipping
BBS has been engineering true high performance wheels for more than 50 years. Over the past 50 years, BBS wheels have won over 250 series Championships, ranging from F1, Touring Cars, Prototypes, Silhouette, Open-wheel, World Rally Championships, Hillclimb and Motorcycles. We understand what it takes to engineer wheels and technologies that can not only compete, but can win Championships. Since BBS produces OE wheels for many manufacturers including companies like BMW, Ferrari and Porsche, we understand the true performance requirements along with the proper load rating, tolerances and durability specifications. If your looking for the ultimate wheel for your BMW, BBS should be the first wheel that comes to mind. Gain the performance and status that comes along with BBS wheels. One Piece Die Forged Aluminum Wheel - Weight optimized by FEM analysis Staggered set of BBS RG-R Diamond Black 18x8.5 ET30 72.5 CB FPS Rings
Show More Show Less
18" BBS RI-A Diamond Silver - Square Set
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
BBS - Corporate Logo
T#:5484741
Part#: RIA007DS1KT
Ships on Jun 22, 2026
$ 4,380.00 USD
Free Shipping
$ 4,380.00 USD
Free Shipping
BBS has been engineering true high performance wheels for more than 50 years. Over the past 50 years, BBS wheels have won over 250 series Championships, ranging from F1, Touring Cars, Prototypes, Silhouette, Open-wheel, World Rally Championships, Hillclimb and Motorcycles. We understand what it takes to engineer wheels and technologies that can not only compete, but can win Championships. Since BBS produces OE wheels for many manufacturers including companies like BMW, Ferrari and Porsche, we understand the true performance requirements along with the proper load rating, tolerances and durability specifications. If your looking for the ultimate wheel for your BMW, BBS should be the first wheel that comes to mind. Gain the performance and status that comes along with BBS wheels. One-Piece Die Forged Aluminum Wheel - BBS Patented Milling Process inside the spoke area - Weight optimized by FEM analysis. Square set of BBS RI-A Diamond Silver 18x8.5 ET34 72.5 CB FPS Rings
Show More Show Less


18" BBS RG-R Diamond Silver - Square Set
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
BBS - Corporate Logo
T#:5471102
Part#: RG794DSKKT
Ships on Jun 22, 2026
$ 4,800.00 USD
Free Shipping
$ 4,800.00 USD
Free Shipping
BBS has been engineering true high performance wheels for more than 50 years. Over the past 50 years, BBS wheels have won over 250 series Championships, ranging from F1, Touring Cars, Prototypes, Silhouette, Open-wheel, World Rally Championships, Hillclimb and Motorcycles. We understand what it takes to engineer wheels and technologies that can not only compete, but can win Championships. Since BBS produces OE wheels for many manufacturers including companies like BMW, Ferrari and Porsche, we understand the true performance requirements along with the proper load rating, tolerances and durability specifications. If your looking for the ultimate wheel for your BMW, BBS should be the first wheel that comes to mind. Gain the performance and status that comes along with BBS wheels. One Piece Die Forged Aluminum Wheel - Weight optimized by FEM analysis Staggered set of BBS RG-R Diamond Silver 18x8.5 ET30 72.5 CB FPS Rings
Show More Show Less
BBS 16" Style RG 527 SK Wheels - Square Set
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
BBS - Corporate Logo
T#:15412505
Part#: RG527SKKT3
Back Ordered
$ 3,169.00 USD
$ 3,169.00 USD

BBS 16" Style RG 527 SK Wheels combine decades of race-proven quality and precision German engineering with a striking, timeless design. Crafted using advanced manufacturing techniques, these wheels are designed to offer an exceptional balance of strength, durability, and lightweight performance. Built with a forged construction, the BBS RG 527 SK wheels stand out as some of the finest two-piece wheels available on the market.

Forging aluminum under extreme pressure results in a wheel that is both robust and light. BBS engineers optimize wheel properties with FEM analysis even before the forging process begins, ensuring top-notch performance. The back-milling technique further enhances the strength-to-weight ratio, providing increased stability without adding unnecessary weight.

Finished in a stunning silver paint with a diamond-cut lip, these wheels are designed to exceed OE manufacturer specifications for longevity and durability. A protective clear coat layer ensures they stay looking pristine and are easy to maintain.

Benefits:

  • Lightweight Forged Construction: Offers increased strength without the added weight, enhancing vehicle performance.
  • Race-Proven Quality: Designed and engineered with cutting-edge technology for maximum durability and performance.
  • Back-Milling Process: Optimizes weight distribution while maintaining structural integrity.
  • Stunning Finish: Silver paint with a diamond-cut lip for a sleek, eye-catching appearance.
  • Durable and Easy to Maintain: Exceeds OE standards with a protective clear coat for long-lasting shine and easy cleaning.
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