H&R 50675601 TRAK+ Wheel Adapters BMW 5/120 to 72.5CB - Pair

The H&R TRAK+ Wheel Adapters (Part #50675601) are hubcentric wheel adapters designed to adapt BMW wheels with a 5/120 bolt pattern and 72.5mm center bore. Sold as a pair, these adapters allow fitment of wheels with a different bolt pattern than your vehicle's hub, opening up a wide range of wheel options while maintaining the precision fitment H&R is known for.

Unlike simple spacers, TRAK+ Wheel Adapters feature a different bolt pattern on the wheel-facing side of the adapter, enabling non-standard bolt pattern wheel fitment. Like H&R's TRAK+ DRM Series spacers, these adapters are hubcentric — they seat directly onto the vehicle hub for a precise, centered fit with no vibration or runout concerns.

Key Features:

• Hubcentric design — fits to the vehicle hub just like a standard wheel spacer for precise, vibration-free fitment
• Bolt pattern conversion — allows wheels with a different bolt pattern to be fitted to your vehicle
• Available in 20mm to 25mm thicknesses — moves the wheel outward while adapting the bolt pattern
• Proprietary aluminum/magnesium alloy construction — up to 70% lighter than comparable steel adapters
• Hard anodized finish — provides a tough, durable, corrosion-resistant surface
• Maximizes track width — improves lateral stability, lowers roll center, and enhances handling
• Sold as a pair

Wheel Bolt Guidelines (when ordering replacement bolts):

• New bolts must be longer than the originals by the thickness of the adapter used
• The bolt head style must match the existing bolts — refer to these end-digit codes:
  • Taper 60° — end digit 01
  • Round head M12/d24mm or M14/d28mm — end digit 02
  • Round head M12/d26mm (e.g., OE VAG wheels) — end digit 03
  • Flat head for Porsche OE wheels M14×1.5 — end digit 06

Minimum Thread Engagement Safety Guidelines:

• M12×1.25 — 8.0 turns (~10mm load-bearing shaft length)
• M12×1.50 — 6.5 turns (~10mm load-bearing shaft length)
• M12×1.75 — 6.5 turns (~12mm load-bearing shaft length)
• M14×1.25 — 9.0 turns (~12mm load-bearing shaft length)
• M14×1.50 — 7.5 turns (~12mm load-bearing shaft length)
• 1/2" UNF — 8.0 turns (~11mm load-bearing shaft length)

Important Installation Note: After installation, turn the wheel by hand to verify the bolts do not contact any brake system components (including ABS sensors). The wheel must rotate freely. Maximum clearance tolerance on some vehicles (e.g., Mercedes rear axle) may be as little as 2mm — verify clearances carefully.