The 2005 Holden Commodore VZ is the final evolution of the third-generation Commodore platform, featuring a reliable rear-wheel-drive layout and strong aftermarket support.
For proper fitment, it’s critical to understand the correct tyre sizes, wheel specs, PCD, centre bore, and offset — especially when upgrading wheels.
At Autosport Tyreworld Magill, Wingfield & Clarence Gardens, we regularly service VZ Commodores including Executive, Acclaim, SV6, SS and Calais.
OEM Tyre Sizes (All Variants)
Based on factory data cross-referenced with Wheel-Size:
- 205/65R15 (Base models)
- 225/60R16 (Executive / Acclaim)
- 235/45R17 (SV6)
- 235/40R18 (SS / Calais performance models)
OEM Wheel (Rim) Specifications
| Variant | Wheel Size |
|---|---|
| Base | 15x6 |
| Executive / Acclaim | 16x6.5 |
| SV6 | 17x8 |
| SS / Calais | 18x8 |
Typical OEM specs:
- 16x6.5 +48
- 17x8 +45 to +48
- 18x8 +45
These specs are consistent across VZ production years.
Bolt Pattern (PCD)
- 5x120
Standard across VZ Commodore and shared with later VE/VF platforms.
Centre Bore (CB) — CORRECT SPEC
- CB: 69.5mm (OEM)
This is the correct factory hub size for VZ Commodore based on Wheel-Size data.
Important:
- Many aftermarket wheels use larger CB (72.6mm, 73.1mm, etc.)
- Always use hub-centric rings → 69.5mm
- Do NOT assume VE/VF (66.9–67.1mm) compatibility
Wheel Offset (ET)
- OEM Offset: +43 to +50
Recommended aftermarket range:
- +35 to +45 → Flush fitment
- Lower offset = more aggressive stance
Wheel Nut / Torque Spec
- Recommended Torque: 110 – 120 Nm
Best practice:
- Torque with calibrated wrench
- Recheck after 50–100 km
Recommended Upgrade Fitments
Daily / Comfort Setup
- 225/60R16
- 16x7 +45
✔ Comfortable and cost-effective
Street Performance Setup
- 235/45R17
- 17x8 +40
✔ Most common upgrade
Aggressive Street Setup
- 245/40R18
- 18x8.5 +38
✔ Better stance and grip
Staggered Setup (Performance Builds)
- Front: 245/40R18
- Rear: 275/35R18
✔ Ideal for V8 traction
Popular Tyre Options (Available at Autosport Tyreworld)
- Continental UC7 – Daily comfort
- Michelin PS5 / PS4S – Performance
- Yokohama Advan AD09 – Track use
- Hankook Ventus S1 Evo – Balanced performance
Fitment Tips (Important)
- VZ Commodore uses 5x120 PCD + 69.5mm CB (unique vs VE/VF)
- Always confirm centre bore when swapping wheels between generations
- Check brake clearance on SS models
- Keep rolling diameter within ±3%
- Wider wheels may require guard rolling
Why This Matters (Common Mistake)
A very common issue we see in Adelaide:
Customers try to fit VE/VF wheels (66.9–67.1mm CB) onto a VZ.
→ This will NOT seat correctly without machining
→ Can cause vibration or unsafe fitment
Correct approach:
- Use wheels with 69.5mm CB, or
- Use proper machining + hub solutions
Why Choose Autosport Tyreworld?
- Professional wheel & tyre fitment
- Expert Commodore fitment knowledge
- Competitive pricing (fitted & balanced)
- Fast turnaround
Our Locations (Adelaide)
Magill
647 Magill Road, Magill SA 5072
PH: 0452 641 023
Wingfield
411 Grand Junction Road, Wingfield SA 5013
PH: 0433 645 411
Clarence Gardens (South Road)
911 South Road, Clarence Gardens SA 5039
PH: 0420 299 911