Spec Sizes

2006 Cadillac XLR Wheel Size & Fitment Specs

Confirmed OEM mounting and wheel configurations for this model year. Multiple setups are listed separately — nothing is collapsed to a single arbitrary size.

  • Bolt pattern5x120.7
  • Center bore70.1 mm
  • Thread sizeM12 x 1.5
  • FastenerLug nuts

Open wheel fitment calculator → · Tire sizes →

4.4i

PositionRimOffsetBackspacingTireBore
Front / all8.5x19ET566.45"255/40R1970.3 mm
Rear8x19ET616.4"235/45R1970.3 mm
Rear8x20ET556.17"235/40R2070.3 mm

Staggered / rear-specific sizes are listed separately from front.

4.6i

PositionRimOffsetBackspacingTireBore
Front / all8x18ET516.01"235/50R1870.3 mm
Rear8x18ET516.01"235/50R1870.3 mm
Rear8x19ET516.01"235/45R1970.3 mm

Staggered / rear-specific sizes are listed separately from front.

Vehicles with potentially interchangeable wheels

Filtered by exact bolt pattern and physically compatible center bore — not a full fitment guarantee.

Hardware matching known specs

  • MCGARD Chrome Cone Seat M12 x 1.5 Wheel Locks

    Thread matches catalog hardware

    M12 x 1.5 · lock

    View on Amazon

  • Gorilla Automotive Wheel Locks With Washer (M12x1.50)

    Thread matches catalog hardware

    M12 x 1.5 · lock

    View on Amazon

  • White Knight Chrome M12x1.50 Bulge Acorn Lug Nut, 20 Count

    Thread matches catalog hardware

    M12 x 1.5

    View on Amazon