BBS LM317DSPK LM-R 20x9.5 Diamond Silver Diamond Cut Lip 2-Piece Forged Wheel For Sale - New and Used

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Part Brand: BBS

Part Number: LM317DSPK

Vehicle Fitment

• Universal fitment — compatible with any vehicle using a 5x120 bolt pattern, 20-inch wheel diameter, 9.5-inch width, and +23mm offset
• Common compatible platforms include BMW (M2, M3, M4, M5, M6, 1 Series, 2 Series, 3 Series, 4 Series, 5 Series, 6 Series across multiple generations), Land Rover Range Rover (selected configurations), Rolls-Royce (selected configurations), and other 5x120 vehicles
• Hub bore is 82mm PFS — BBS Permanent Fitting System hub-centric centering rings and retaining clip are required and sold separately; rings must be matched to the specific hub bore of your vehicle
• Always verify brake caliper clearance, fender clearance, and suspension component clearance prior to installation — the aggressive ET23 offset pushes the wheel face significantly outward; verify carefully on standard ride height applications
• Vehicles that have been lowered or otherwise modified must confirm adequate clearance before fitment

Fitment Notes

• This is a universal wheel defined by bolt pattern, diameter, width, and offset — it is not catalogued for a specific make, model, or year
• The ET23 offset is notably low (aggressive) — the wheel face sits substantially outward relative to the hub centerline; verify fender and suspension clearance carefully, particularly on unmodified stock suspension setups
• BBS PFS (Permanent Fitting System) hub-centric centering rings are NOT included and must be purchased separately; they are required for proper hub centering and vibration-free performance
• Lug hardware (bolts or nuts) is NOT included; most BMW 5x120 applications use ball-seat M12x1.5 lug bolts — verify seat type and thread pitch before purchasing hardware
• The diamond cut rim lip is a machined aluminum surface protected by clearcoat — avoid harsh, acidic, or abrasive wheel cleaners that can damage the clearcoat and the exposed machined aluminum
• The LM-R uses titanium fasteners joining the center star to the rim — do not attempt to disassemble; titanium hardware is a permanent structural element and must remain intact
• Sold individually — a complete set of four requires a quantity of 4

Features

• BBS LM-R — the performance evolution of the legendary BBS LM, combining the iconic Le Mans-derived design with BBS\'s patented milled spoke technology: material is removed from the back of each spoke through a reverse CNC machining process, producing a lighter and stronger wheel than the standard LM while preserving its iconic aesthetic
• 2-piece die-forged aluminum construction — a forged center star and a forged rim barrel, independently optimized and joined by titanium fasteners (not standard rivets), producing superior strength-to-weight performance versus the standard LM and any cast alternative
• Both the center star and rim barrel are forged from 6,000-series or special 7,000-series Dura aerospace-grade aluminum billet under up to 18 million pounds of pressure — creating a fully dense, homogeneous grain structure in each component
• BBS patented milled spoke technology — reverse CNC machining removes excess material from non-structural spoke cross-sections, reducing overall wheel weight while improving airflow to brake components for enhanced brake cooling during performance driving
• Titanium fasteners joining center to rim — stronger and lighter than standard steel hardware; a signature feature distinguishing the LM-R from the standard LM\'s exposed rivets
• Diamond Silver center — a faceted bright silver metallic paint on the 7-spoke star delivering a clean, motorsport-pure aesthetic with strong contrast against the polished rim
• Diamond Cut machined rim lip — the rim barrel is CNC diamond-cut to expose the bare polished aluminum, then clearcoated for long-term protection, creating the signature high-contrast two-tone appearance
• 7-spoke design — the LM-R\'s spoke count differs from the standard LM\'s 10-spoke mesh, offering a more open, modern interpretation of the LM\'s cross-spoke heritage while accommodating the milled spoke engineering
• Weight optimized through FEM (Finite Element Method) computer simulation at every stage of design to eliminate excess material while maintaining full structural integrity
• Designed, engineered, and manufactured in Germany to BBS\'s complete quality and safety standards

Specifications

• Part Number: LM317DSPK
• Model: BBS LM-R (LM317) — Forged Line 2-Piece with Milled Spokes
• Diameter: 20 inches
• Width: 9.5 inches
• Bolt Pattern: 5x120mm
• Offset: +23mm (ET23)
• Backspacing: 6.16 inches
• Hub Bore: 82mm PFS (Permanent Fitting System — centering rings and clip required, sold separately)
• Finish: Diamond Silver center with Diamond Cut machined clearcoated rim lip
• Construction: 2-piece die-forged aluminum (forged center star joined to forged rim via titanium fasteners)
• Spoke Style: 7-spoke design with BBS patented milled (reverse-CNC machined) spokes
• Lug Type: Exposed lugs
• Hardware: Titanium fasteners (permanent — do not disassemble)
• Weight: 37.0 lbs per wheel
• Origin: Manufactured in Germany
• Warranty: BBS manufacturer\'s limited warranty against defects in materials and workmanship

Included Components

• 1x BBS LM-R 2-piece forged aluminum wheel — LM317DSPK (sold individually; set of 4 requires quantity of 4)
• 1x BBS center cap
• Note: BBS PFS hub-centric centering rings (82mm bore, vehicle-specific inner diameter), retaining clips, and lug hardware are NOT included and must be purchased separately

Product Description

The BBS LM317DSPK is a 20x9.5 LM-R series 2-piece die-forged aluminum wheel on a 5x120 bolt pattern with a +23mm offset, finished in Diamond Silver with a Diamond Cut machined clearcoated rim lip. The LM-R is an important distinction from the standard BBS LM: while it inherits the same Le Mans-derived motorsport heritage and the iconic two-tone Diamond Silver / diamond cut rim aesthetic, the LM-R incorporates BBS\'s patented milled spoke technology — a reverse CNC machining process that removes material from the back of each spoke, reducing weight and increasing airflow to the brake components — along with titanium fasteners instead of standard rivets joining the center star to the rim. The result is a wheel that is lighter, structurally more refined, and mechanically superior to the standard LM, while remaining unmistakably part of the same legendary visual lineage. The 7-spoke design of the LM-R also distinguishes it from the standard LM\'s 10-spoke mesh architecture, presenting the cross-spoke heritage in a more open and contemporary interpretation.

Both the center star and rim barrel of the LM317DSPK are independently die-forged from 6,000-series or special 7,000-series Dura aerospace-grade aluminum billet under up to 18 million pounds of forging pressure, producing a fully dense, homogeneous grain structure in each component before assembly. The titanium fasteners that join the two forged pieces are stronger and lighter than standard steel hardware and represent one of the most immediately visible differences between the LM-R and the standard LM on close inspection. FEM computer simulation validates the complete assembled structure throughout the design process, and the milled spoke geometry is validated to confirm that material is removed only from areas where structural load contribution is genuinely minimal. The Diamond Silver painted center and CNC diamond-cut polished clearcoated rim together produce the high-contrast two-tone appearance that has made the LM lineup one of the most recognized and enduring designs in automotive wheel history.

The LM317DSPK\'s ET23 offset is notably aggressive — substantially lower than the ET48 of the LM249DSPK — which positions the wheel face significantly further outward relative to the hub centerline and demands careful verification of fender and suspension clearance before installation, particularly on unmodified stock-suspension BMW platforms. The 82mm PFS hub bore requires BBS PFS centering rings and a retaining clip, purchased separately and specified for the correct vehicle hub bore. Lug hardware is not included — most BMW 5x120 applications use M12x1.5 ball-seat lug bolts; verify thread pitch and seat type before ordering. The diamond cut rim lip must be maintained with mild soap and water only, as harsh or acidic cleaners will damage the clearcoat and the exposed machined aluminum surface. This wheel is sold individually — a complete set requires a quantity of four.

*Parts are for USA spec vehicles, please contact us to verify fitment on JDM & international models.

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• Canada customers - If does not collect import & duty fees during checkout, the shipping carrier will collect them prior to delivery.

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• Any returns received installed, mounted, used or missing components will be subject to return fee\'s.

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