2001–2006 · coupe
The V2 and VZ Monaro, sold in the US as the 2004–2006 Pontiac GTO, came on 17 or 18-inch wheels 8 inches wide at ET48. Owners usually go to wider 18 or 19-inch wheels, often with a 9.5-inch rear, and drag-racing GTOs often fit the widest rear tyre the arches will take. The rear arch lip, not the brakes, is what limits most setups.
5x120 bolt pattern · 69.5 mm centre bore · Stock wheels: 18 × 8, 17 × 8 inch · Stock tyres: 235/40 R18, 235/45 R17, 245/45 R17
Updated 2026-10-31 · High source confidence. Check your exact trim and market. How we check specs
| Specification | Value |
|---|---|
| Bolt pattern | |
| Stock tyre sizes | |
| Centre bore | 69.5 mm |
| Fastener and thread | Wheel nut, M12x1.5 |
| Tightening torque | Confirm in your handbook |
Factory options vary by trim and market. Match your car to the row below and check its tyre placard before using it as a baseline.
| Trim | Axle | Wheel | Tyre |
|---|---|---|---|
| Monaro CV8, 18-inch | Front and rear | 18 × 8 inch, ET48 | 235/40 R18 |
| Monaro CV6, 17-inch | Front and rear | 17 × 8 inch, ET48 | 235/45 R17 |
| Pontiac GTO, standard 17-inch | Front and rear | 17 × 8 inch, ET48 | 245/45 R17 |
| Pontiac GTO, optional 18-inch | Front and rear | 18 × 8 inch, ET48 | 235/40 R18 |
Read these before choosing wheels for the Monaro / Pontiac GTO: they explain the offset, fitment and hub numbers in this guide.
Starting points for a build. Read the notes with each setup, especially if your car is lowered or has different brakes.
Apex's GTO fitment guide marks this as its popular staggered fitment and lists it as a direct fit, with 245/40 R18 front and 275/35 R18 rear tyres. A 255/35 R18 front is listed as a wider alternative. Apex also offers the front at ET40.
Apex lists 18x8.5 at ET35, ET40 or ET45 all round as a direct fit with 245/40 R18 tyres. It describes ET45 as a factory-style fitment and ET35 as a flusher aftermarket look.
Apex lists this as a direct fit with 255/40 R18 tyres on factory brakes, but says cars converted to CTS-V brakes need a 1/4-inch (about 6 mm) front spacer.
Apex's 17-inch square option, a direct fit with 245/40 R17 tyres. A wider 255/40 R17 may need around -1.5 degrees of front camber on some cars.
A GTO owner on the LS1Tech forum reports running 19x8.5 ET35 front and 19x9.5 ET40 rear wheels with 275-wide rear tyres and says they have never rubbed, with the rear on drag bags at low pressure. He doesn't give the front tyre size; 245/35 R19 is within about 1.5% of the factory 18-inch tyre's diameter.
Check the exact setup
There is no confirmed range for this car yet. Compare a known wheel with your proposed size and measure both sides.
Measure before ordering
A maximum width has not been confirmed. Tyre shape, ride height and alignment all change the available space.
These figures belong to the setups described here. Combining the widest wheel with either end of the offset range does not guarantee a safe fit. For how ET moves the wheel in and out, read wheel offset explained; for how far the tyre can sit out, see flush, poke and tucked fitment.
Upload a photo and start with a look that suits the Monaro / Pontiac GTO. Try the wheels, colour and stance before you spend on parts.
An AI preview shows the look. It cannot verify physical fitment.
These tools start with the Monaro CV8, 18-inch front size. Choose your own trim or axle in the calculator if it differs.
5x120, with a 69.5 mm centre bore and M12x1.5 wheel nuts. Both cars are the same underneath.
17x8 ET48 with 245/45 R17 tyres as standard, or 18x8 ET48 with 235/40 R18 as the option. The Monaro CV8 came on 18x8 ET48 with 235/40 R18, and the CV6 on 17x8 ET48 with 235/45 R17.
Yes. They use the same 5x120 drilling and 69.5 mm hub, and most 17 and 18-inch factory wheels from those cars are 8 inches wide at ET48 like the Monaro's own.
Apex lists 275/35 R18 on an 18x9.5 ET58 rear as a direct fit, and one owner reports no rubbing with 275s on 19x9.5 ET40 rears. Taller 275/40 R18 and wider drag tyres have caught the rear arch on other cars, even with the lips rolled or ground, so check rear clearance with the car loaded.
Factory tyre (tire) sizes for the 2001–2006 Holden Monaro / Pontiac GTO V2/VZ are 235/40 R18, 235/45 R17 and 245/45 R17, depending on trim. Your tyre placard shows the size for your car.
Factory wheels are 18 × 8 inch and 17 × 8 inch, depending on trim. The stock table lists the offset for each.
69.5 mm. Aftermarket wheels with a larger bore need hub-centric rings sized to it.
This guide is a starting point, not a fitment guarantee. Specs can differ by market, trim and previous modifications. Confirm all sizes, clearances and fastener requirements with a qualified wheel and tyre professional before buying or fitting parts.
More guides from Holden or cars with the same bolt pattern. A matching pattern alone does not make a wheel interchangeable.