What makes forged wheels different from cast wheels?

Forged wheels are made by heating metal and then pressing it into shape under extreme pressure. This process aligns the metal's grain structure, making the wheel stronger and lighter than cast wheels, which are made by pouring molten metal into a mold.

What does the 'ET40' offset mean for my vehicle?

The ET40 offset refers to the distance between the wheel's mounting surface and the centerline of the wheel. A positive offset like ET40 typically means the wheel sits further inward towards the suspension components compared to a zero offset.

Does this wheel come with a center cap and lug nuts?

This wheel is sold individually and requires a specific clip for the center cap. Lug nuts and other mounting hardware are typically sold separately and should be chosen based on your vehicle's specifications.

BBS RG-R Forged Wheel 17x8 5x120 ET40 Diamond Silver RG719HD

Name: BBS RG-R 17x8 5x120 ET40 CB72.5 Diamond Silver Wheel -82mm PFS/Clip Req
Brand: BBS
SKU: bbs-bbs-rg-r-17x8-5x120-et40-cb72-5-diamond-silver-wheel-82mm-pfs-clip-req-t14-818873
Price: 1013.76 USD
Availability: BackOrder

BBS RG-R 17x8 5x120 ET40 CB72.5 Diamond Silver Wheel -82mm PFS/Clip Req

$1013.76

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

BBS RG-R 17x8 5x120 ET40 CB72.5 Diamond Silver Wheel -82mm PFS/Clip Req

Key Features

Fits vehicles with a 5x120 bolt pattern.
17-inch diameter and 8-inch width provide a balanced profile for many performance applications.
ET40 offset and 72.5mm center bore are common on many BMW vehicles.
Forged construction offers a strong and lightweight wheel.
Diamond Silver finish provides a classic and attractive appearance.
PFS (Performance Forged Series) designation and clip requirement indicate specific mounting features.

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Product Details

BBS is well-known for their high-performance, lightweight wheels that have been a staple in motorsports and enthusiast vehicles for decades. The RG-R wheel embodies this legacy, offering a blend of strength and reduced weight that can make a notable difference in your vehicle's handling and responsiveness. This particular RG-R is a 17-inch diameter wheel with an 8-inch width, designed with a 5x120 bolt pattern and a +40mm offset (ET40). The 72.5mm center bore is compatible with many BMW applications, and the Diamond Silver finish gives it a clean, classic look.

Forged wheels like the RG-R are constructed using a high-pressure forming process that aligns the metal's grain structure, resulting in a wheel that is significantly stronger and lighter than cast wheels. This process allows BBS to create a wheel with a robust structure that can withstand the rigors of daily driving and spirited performance, all while minimizing unsprung weight. Reducing unsprung weight is key to improving your car's acceleration, braking, and suspension response, as the wheels and tires are easier for the suspension to control. The -82mm PFS (Performance Forged Series) designation indicates a specific design feature, and the requirement for a clip means a specific mounting system is used for the center cap, ensuring a secure and clean installation.

When considering a wheel upgrade like the BBS RG-R, it's important to ensure proper fitment for your specific vehicle. While the 5x120 bolt pattern and 72.5mm center bore are common on many BMW models, the ET40 offset and 8-inch width need to be compatible with your car's suspension and fender clearance. It's always recommended to consult your vehicle's specifications or a professional to confirm fitment before purchase. These wheels are sold individually, so you'll need to order four for a complete set.