ET35 · ET33 · ET30
| Configuration | Front | Rear | Offset | Backspacing | Tire | Bolt pattern | Center bore | Thread |
|---|---|---|---|---|---|---|---|---|
| 2.0T · 2.0L, B20NHT, I4, Petrol | 8x18 | 8x18 | ET35 | 5.38 in | 235/50R18 | 5x120 | 66.9 mm | M14 x 1.5 |
| 2.0T · 2.0L, B20NHT, I4, Petrol | 8.5x20 | 8x18 | ET33 / ET35 | 5.55 in | 245/40R20 / 235/50R18 | 5x120 | 66.9 mm | M14 x 1.5 |
| 3.0T · 3.0L, LGW, V6, Petrol | 8.5x20 | 8.5x19 | ET33 | 5.55 in | 245/40R20 / 245/45R19 | 5x120 | 66.9 mm | M14 x 1.5 |
| 3.0T · 3.0L, LGW, V6, Petrol | 9x21 | 8.5x19 | ET30 / ET33 | 5.68 in | 255/35R21 / 245/45R19 | 5x120 | 66.9 mm | M14 x 1.5 |
| 3.6i · 3.6L, LGX, V6, Petrol | 8.5x20 | 8.5x19 | ET33 | 5.55 in | 245/40R20 / 245/45R19 | 5x120 | 66.9 mm | M14 x 1.5 |
| 3.6i · 3.6L, LGX, V6, Petrol | 9x21 | 8.5x19 | ET30 / ET33 | 5.68 in | 255/35R21 / 245/45R19 | 5x120 | 66.9 mm | M14 x 1.5 |
See how a different wheel would sit See wheel backspacing
See how a different width or offset sits versus an OEM configuration for this year.
White Knight 1309-1S-20AM Chrome M14x1.50 Open-End Bulge Acorn Lug Nut, 20 Pack
Confirmed vehicle catalog match. Confirm seat type for your wheel.
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Set of 20 Veritek 14x1.5mm Gloss Black Spline Drive Tuner Lug Nuts w/Key 1.40 Inch for Aftermarket Custom Wheels
Confirmed vehicle catalog match. Confirm seat type for your wheel.
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White Knight 3809L-20AM Chrome M14 x 1.50 Duplex Spline Lug Nut, 20 Pack
Confirmed vehicle catalog match. Confirm seat type for your wheel.
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White Knight Wheel Accessories 41900 Chrome M14x1.50 Open End Acorn Wheel Lock Set, 4 Count(Pack of 1), 14mm x 1.50
Confirmed vehicle catalog match. Confirm seat style for your wheel.
Check price on AmazonObserved aftermarket setups from documented Modified1 builds. These are individual build records — not OEM specifications and not clearance guarantees for every vehicle.
Among builds in our database for this model year:
1 documented build.
Documented on a 2016 Cadillac CT6 build — observed custom fitment, not a universal fit guarantee.
Wheel: Savini BM13
Compared with the 21×9 ET30 OEM configuration. Calculated geometry only — not fit confirmation.
OEM offsets are catalog configurations, not an aftermarket “safe ET range.” Matching offset alone does not confirm clearance. Documented custom builds are observed setups only.