WheelOffset

2005 Chevrolet TrailBlazer EXT Wheel Offset

Quick specs

Wheel size
7x17
Offset
ET50
Backspacing
5.47 in
Bolt pattern
6×127
Center bore
78.1 mm, 77.8 mm
Thread
M12×1.5
Tire size
245/65R17

OEM configurations

ConfigurationRimOffsetBackspacingTireBolt patternCenter boreThread
4.2 · I6, Petrol7x17ET505.47 in245/65R176x12777.8 mmM12 x 1.5
5.3 · V8, Petrol7x17ET505.47 in245/65R176x12777.8 mmM12 x 1.5

Wheels and hardware

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Lug hardware

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

    M12 x 1.5

    Matches M12 x 1.5 thread — confirm wheel seat style

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  • White Knight 3807BK-20AM Black Chrome M12x1.50 Spline Lug Nut, 20 items

    M12 x 1.5

    Matches M12 x 1.5 thread — confirm wheel seat style

    Check price on Amazon

Wheel locks

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  • MCGARD Chrome Cone Seat M12 x 1.5 Wheel Locks

    M12 x 1.5 · lock

    Matches M12 x 1.5 — confirm seat style for your wheel

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

    M12 x 1.5 · lock

    Matches M12 x 1.5 — confirm seat style for your wheel

    Check price on Amazon

Compare your own setup

See how a different width or offset sits versus an OEM configuration for this year.

OEM: 17×7 ET50 · 245/65R17 · Front · 4.2 · I6, Petrol

  • Outer: +0 mm
  • Inner clearance: 0 mm unchanged

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More specs for the 2005 Chevrolet TrailBlazer EXT

Each OEM row is a catalog configuration. Offset ranges are not collapsed when the database has exact setups. Documented aftermarket builds are observed setups only — not universal fit or clearance confirmation.