Spec Sizes

2021 Chevrolet TrailBlazer 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 pattern5x115
  • Center bore70.2 mm
  • Thread sizeM12 x 1.5
  • FastenerLug nuts

Open wheel fitment calculator → · Tire sizes →

1.2T

PositionRimOffsetBackspacingTireBore
Front / all7x16ET385"215/65R1670.2 mm
Front / all7.5x17ET435.44"225/60R1770.2 mm
Front / all7x17ET385"225/55R1770.2 mm
Front / all7.5x18ET435.44"225/55R1870.2 mm

1.3T

PositionRimOffsetBackspacingTireBore
Front / all7x16ET385"215/65R1670.2 mm
Front / all7.5x17ET435.44"225/60R1770.2 mm
Front / all7.5x18ET435.44"225/55R1870.2 mm
Front / all7x17ET385"225/60R1770.2 mm
Front / all7x16ET385"215/65R1670.2 mm
Front / all7.5x17ET435.44"225/60R1770.2 mm
Front / all7.5x18ET435.44"225/55R1870.2 mm
Front / all7x17ET385"225/60R1770.2 mm

2.8D

PositionRimOffsetBackspacingTireBore
Front / all7.5x18ET335.05"265/60R18100.3 mm
Front / all6.5x16ET334.55"245/70R16100.3 mm
Front / all7x16ET334.8"265/70R16100.3 mm
Front / all7.5x17ET335.05"255/65R17100.3 mm

1.3T

PositionRimOffsetBackspacingTireBore
Front / all7.5x17ET435.44"225/60R1770.2 mm
Front / all7.5x18ET435.44"225/55R1870.2 mm
Front / all7x17ET385"225/60R1770.2 mm
Rear8x19ET405.57"245/45R1970.2 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