WheelOffset

2005 Scion tC Wheel Offset

Quick specs

Wheel size
7x17 · 6.5x16 · 7.5x18
Offset
ET45 · ET42
Backspacing
5.27 in · 5.02 in · 5.40 in
Bolt pattern
5×100
Center bore
54.1 mm
Thread
M12×1.5
Tire size
215/45R17 · 205/55R16 · 225/40R18

OEM configurations

ConfigurationRimOffsetBackspacingTireBolt patternCenter boreThread
2.4i · 2.4L, 2AZ-FE, I4, Petrol7x17ET455.27 in215/45R175x10054.1 mmM12 x 1.5
2.4i · 2.4L, 2AZ-FE, I4, Petrol6.5x16ET455.02 in205/55R165x10054.1 mmM12 x 1.5
2.4i · 2.4L, 2AZ-FE, I4, Petrol7.5x18ET425.40 in225/40R185x10054.1 mmM12 x 1.5

Wheels and hardware

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  • No exact catalog match in inventory

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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

    Check price on Amazon

  • 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

    Check price on Amazon

  • 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

Real-World 2005 Scion tC Wheel Setups

Observed aftermarket setups from documented Modified1 builds. These are individual build records — not OEM specifications and not clearance guarantees for every vehicle.

Common custom wheel sizes

Among builds in our database for this model year:

  • 18-inch — 1 documented build

1 documented build.

2005 Scion tC custom wheel setup

Staggered · 18×9.5 ET35 / 18×9.5 ET15

Documented on a 2005 Scion tC build — observed custom fitment, not a universal fit guarantee.

Wheel: Rota DPTs

Front
18×9.5 ET35 · 215/35R18
Rear
18×9.5 ET15
Compared with OEM

Compared with the 18×7.5 ET42 OEM configuration. Calculated geometry only — not fit confirmation.

  • Outer edge 32.4 mm farther toward fender (more outward poke)
  • Inner edge 18.4 mm closer to suspension (less inner clearance)
  • Width +2" vs OEM
View full build on Modified1

Compare your own setup

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

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More specs for the 2005 Scion tC

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.