1978 Oldsmobile Omega Wheels & Rims
Shop Wheels for 1978 Oldsmobile Omega
Showing 8 of 8+ wheels compatible with the 1978 Oldsmobile Omega
The 1978 Oldsmobile Omega—available in Base, Brougham, Brougham LS, and SX trims—rolled off the assembly line wearing fourteen-by-five-and-a-half-inch wheels. Your Omega's 5x120.65 bolt pattern opens up serious upgrade potential with our curated selection from American Racing, US Mag 1PC, Performance Replicas, Vision, E5 Wheels, WELD Performance, Forgestar, and Ridler. Every wheel we offer is verified to bolt on perfectly.
From fourteen-inch classics to eighteen-inch modern muscle, your Omega can accommodate sizes ranging up to eighteen-by-seven-and-a-half. Whether you're hunting vintage-style steel or aggressive contemporary designs, ThreePiece.us stocks the right fit for your vision. All orders ship free to the lower 48 states, so upgrading your rolling stock has never been easier.
1978 Oldsmobile Omega Wheel Fitment Guide — What Works & What to Avoid
Your 1978 Oldsmobile Omega uses a 5x120.65 bolt pattern and rolls on a stock 14x5.5 wheel with a 5 mm offset. You can step up to 14x6, 15x6.5, 15x7, 16x7, 16x7.5, 17x7, 17x7.5, 17x8, or 18x7.5 depending on your aesthetic preference and suspension geometry. All fitments are square—no staggered setup is needed for this classic.
Only wheels with a 5x120.65 bolt pattern will work on your Omega. The hub center bore is 73.9 mm; if your chosen wheel has a larger bore, use hub-centric rings to ensure a proper fit. Be cautious about moving to wider or more aggressive offsets, as the chassis can be sensitive to rubbing against fenders and suspension components.
Every wheel we list for your Omega is verified to bolt on clean and ships free across the lower 48 states. American Racing, US Mag 1PC, Performance Replicas, Vision, E5 Wheels, WELD Performance, Forgestar, and Ridler all have fitments in stock right now.
1978 Oldsmobile Omega Wheel Fitment Specifications
The 5x120.65 bolt pattern determines which wheels physically bolt onto your vehicle, while the 73.9mm center bore ensures a hub-centric fit. The factory equips this vehicle with 14x5.5 wheels at a +5 offset.
Lug Type
nut
Thread Size
1/2 UNF
Torque Spec
74 ft-lbs
TPMS
No
1978 Oldsmobile Omega Compatible Wheel Sizes
| Wheel Size | Offset Range | Compatible Tires | Notes |
|---|---|---|---|
| 14x5.5 | -8 to +18 | E78-14, 195/75R14 | — |
| 14x6 | -8 to +18 | 195/75R14 | — |
| 15x6.5 | -8 to +18 | 205/65R15 | — |
| 15x7 | -8 to +18 | 205/65R15 | — |
| 16x7 | -8 to +18 | 205/60R16 | — |
| 17x7 | -8 to +18 | 205/55R17 | — |
| 16x7.5 | -8 to +18 | 205/60R16 | — |
| 17x7.5 | -8 to +18 | 205/55R17 | — |
| 18x7.5 | -8 to +18 | 225/45R18 | — |
| 17x8 | -8 to +10 | 225/50R17, 205/55R17 | 1. Check fitment, possible clearance issues |
| 18x8 | -8 to +18 | 225/45R18 | 1. Check fitment, possible clearance issues |
| 19x8 | -8 to +10 | 225/40R19 | 1. Check fitment, possible clearance issues |
Best Wheel Brands for the Oldsmobile Omega
Complete Your 1978 Oldsmobile Omega Build
- Oldsmobile Omega suspension — pairs well with a wheel upgrade
- Oldsmobile Omega brakes — pairs well with a wheel upgrade
- Wheel & tire packages — pre-mounted, balanced, shipped ready to bolt on
- Installation accessories — hub rings, extended studs, TPMS kits, spacers