H&R 607557252 TRAK+ Hubcentric Wheel Adapters for Mercedes 5/112 Bolt Pattern (Pair)

The H&R TRAK+ Wheel Adapters (PN 607557252) are precision-engineered hubcentric adapters designed to adapt Mercedes wheels with a 5/112 bolt pattern, 66.5mm center bore, and 12x1.5 thread pitch. Sold as a pair, these adapters allow fitment of wheels with a different bolt pattern, giving you the flexibility to run non-standard wheel configurations on your vehicle.

Unlike simple spacers, TRAK+ Wheel Adapters bolt to the vehicle hub and present a new bolt pattern on the wheel side, enabling non-standard wheel fitment while maintaining a hubcentric fit. This hubcentric design ensures the wheel is centered on the hub — not just the bolts — for a vibration-free, safe installation identical to OEM wheel seating.

Key Features:

• Hubcentric design — centers the wheel on the hub for smooth, vibration-free fitment
• Bolt pattern: 5/112 (vehicle side) with 66.5mm center bore and M12x1.5 thread
• Sold as a pair (two adapters included)
• Proprietary aluminum/magnesium alloy construction — up to 70% lighter than comparable steel products
• Hard anodized finish — provides a tough, corrosion-resistant surface for long-term durability
• Increases track width for improved lateral stability and a more aggressive stance
• Lowers roll center for enhanced handling characteristics
• Suitable for winter use with snow tires and dedicated winter wheels

Wheel Bolt Selection Guidelines:

When selecting wheel bolts for use with these adapters, keep the following in mind:

• New bolts must be longer than the originals by the thickness of the adapter used
• The bolt head style must match the existing bolt — taper (60°), round head (M12/d24mm or M14/d28mm), or flat head (Porsche M14x1.5)
• Always verify bolt head type before ordering — do not mix taper and round-seat bolts

Minimum Wheel Bolt Engagement (Safety Reference):

• M12 x 1.25 — 8.0 turns (~10mm load-bearing shaft length)
• M12 x 1.50 — 6.5 turns (~10mm load-bearing shaft length)
• M12 x 1.75 — 6.5 turns (~12mm load-bearing shaft length)
• M14 x 1.25 — 9.0 turns (~12mm load-bearing shaft length)
• M14 x 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 full clearance inside the hub. Ensure wheel bolts do not contact any brake system components including ABS sensors. Note that maximum clearance tolerance on some vehicles (e.g., Mercedes rear axle) may be as little as 2mm.