| Configuration | Front | Rear | Offset | Backspacing | Tire | Bolt pattern | Center bore | Thread |
|---|---|---|---|---|---|---|---|---|
| 5.7i · 5.7L, LS6, V8, Petrol | 8.5x18 | 8.5x19 | ET42 | 5.90 in | 245/45R18 / 245/40R19 | 6x115 | 70.3 mm | M12 x 1.5 |
M14x1.5 Lug Nuts Black with Spline Tuner, XL 2 inches Length Conical Aftermarket Wheel Nut, Compatible with Chevy GMC Ford Cadillac Lincoln SAAB Saturn Silverado 1500 Savana, Set of 24
Catalog match for this vehicle. Confirm seat type and wheel style before buying.
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14mmx1.5 Wheel Lug Nuts, 24x Black M14x1.5 Lug Nut, Conical/Cone Bulge Seat, dynofit Closed End Lug Nuts with 2 Socket Keys for Chevy GMC Cadillac Lincoln SAAB Saturn 6 Lug Aftermarket Wheel
Catalog match for this vehicle. Confirm seat type and wheel style before buying.
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White Knight 1707S-20AM Chrome M12x1.50 Bulge Acorn Lug Nut, 20 Pack
Catalog match for this vehicle. Confirm seat type and wheel style before buying.
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 2005 Cadillac CTS-V build — observed custom fitment, not a universal fit guarantee.
Wheel: Rota Torques
Compared with the 18×8.5 ET42 OEM configuration. Calculated geometry only — not fit confirmation.
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.