1978 Chevrolet G20 Wheels & Rims
Shop Wheels for 1978 Chevrolet G20
Showing 8 of 8+ wheels compatible with the 1978 Chevrolet G20
The 1978 Chevrolet G20 comes standard across the Beauville, Chevy Van, Nomad, and Sportvan trims with 15x6 wheels bolted to a 5x127 pattern. At ThreePiece.us, we stock wheels from Black Rhino, Dirty Life, Carolina Forged, Fuel 1PC, Icon Alloys, Vision, 9Six9 Wheels, and LOCK OFFROAD that fit your van perfectly. Every wheel is verified to bolt on and ships free to the lower 48 states.
Whether you prefer the classic 15-inch diameter or want to step up to 16 or 17-inch sizes, we've got options ranging from 15x6 all the way to 17x7. Your G20 accepts a variety of widths and styles, giving you room to customize the look while maintaining that perfect fitment. Browse our collection and find the wheels that match your vision.
1978 Chevrolet G20 Wheel Fitment Guide — What Works & What to Avoid
Your 1978 Chevrolet G20 uses a 5x127 bolt pattern. The stock wheel measures 15x6 with an 11mm offset. You can upgrade to larger diameters—15-inch wheels in widths up to 8 inches, or 16-inch wheels up to 8 inches wide—plus 17-inch wheels at 7 inches wide. Since this van runs a square setup front and rear, you have full flexibility across all four corners.
All compatible wheels must match the 5x127 bolt pattern; nothing else will fit your G20. The hub center bore measures 77.8mm, so use hub-centric rings if your chosen wheel has a larger bore. Going significantly wider or running aggressive offsets risks contact with the fender wells and suspension components, so stick within the compatible size range listed for your van.
Every wheel we offer for your G20 bolts on correctly and qualifies for free shipping throughout the lower 48 states. Black Rhino, Dirty Life, Carolina Forged, Fuel 1PC, Icon Alloys, Vision, 9Six9 Wheels, and LOCK OFFROAD all have fitments in stock and ready to ship.
1978 Chevrolet G20 Wheel Fitment Specifications
The 5x127 bolt pattern determines which wheels physically bolt onto your vehicle, while the 77.8mm center bore ensures a hub-centric fit. The factory equips this vehicle with 15x6 wheels at a +11 offset.
Lug Type
nut
Thread Size
1/2 UNF
Torque Spec
74 ft-lbs
TPMS
No
1978 Chevrolet G20 Compatible Wheel Sizes
| Wheel Size | Offset Range | Compatible Tires | Notes |
|---|---|---|---|
| 15x6 | -19 to +15 | G78-15 | — |
| 15x6.5 | -19 to +15 | 225/75R15, 235/75R15 | — |
| 16x6.5 | -19 to +15 | 225/75R16 | — |
| 15x7 | -19 to +15 | 235/75R15, 225/75R15, 30/9.50R15 | — |
| 16x7 | -19 to +15 | 205/80R16, 215/75R16, 215/85R16 | — |
| 17x7 | -19 to +15 | 215/70R17, 225/70R17, 225/75R17 | — |
| 15x7.5 | -19 to +15 | 235/75R15, 30/9.50R15, 225/75R15 | — |
| 16x7.5 | -19 to +15 | 205/80R16, 215/75R16, 215/85R16 | — |
| 17x7.5 | -19 to +15 | 215/70R17, 225/70R17, 225/75R17 | — |
| 18x7.5 | -19 to +15 | 225/60R18 | — |
| 15x8 | -19 to +15 | 235/75R15, 30/9.50R15, 225/75R15 | — |
| 16x8 | -19 to +15 | 205/80R16, 215/75R16, 215/85R16 | — |
| 17x8 | -19 to +15 | 215/70R17, 225/70R17, 225/75R17 | — |
| 18x8 | -19 to +15 | 225/60R18 | — |
| 19x8 | -19 to +15 | 235/55R19 | — |
| 20x8 | -19 to +15 | 235/55R20 | — |
| 20x8.5 | +null to +15 | 235/55R20 | 1. Check fitment, possible clearance issues |
| 20x9.5 | +null to +15 | 235/55R20 | 2. Body Modification Required |
Best Wheel Brands for the Chevrolet G20
Complete Your 1978 Chevrolet G20 Build
- Chevrolet G20 suspension — pairs well with a wheel upgrade
- Chevrolet G20 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