2008 Chevrolet HHR SS tire and wheel sizes, bolt pattern and tire pressure

Bolt pattern 5x110 on every 2008 trim.

Tires for the 2008 Chevrolet HHR SS

Sizes most trims come with first. Open your trim below for its exact size.

225/45R18 Best-rated standard on 1 trim

Check price on Amazon · 225/45R18

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Trims sold in 2008: 1
Generation: HHR SS
Other years: 2008
2009
2010
All years (2008–2010)

1 trim sold in 2008

Open a trim for its tire and rim sizes, bolt pattern and tire pressure.

Chevrolet HHR SS HHR SS

2008–2010 1 trim

HHR SS 2.0 Turbo 260 hp · I4 225/45R18 91W 1 fitment

Generation: HHR SS · 2008–2010
Power: 260 hp
Engine: I4, Petrol
Center bore: 65.1 mm
Bolt pattern: 5x110
Thread: M12 x 1.5

Check price on Amazon · 225/45R18 Wheels 18x7.5 ET42 · 5x110 · 65.1 mm on Amazon

Tire size	Rim size and bolt pattern	Pressure, psi
225/45R18 91W	Rim 18x7.5 ET42 ~~5x110~~	32 psi

How to read 91W: 91 is the load index (up to 1,356 lb / 615 kg per tire) and W the speed rating (up to 168 mph / 270 km/h). ET42 is the wheel offset: how far the mounting face sits from the rim centre, in millimetres. Compare offsets in the wheel offset calculator.

What these columns mean

Rim size: Rim diameter × width in inches, and the factory offset (ET) in millimetres, e.g. 18x7.5 ET25.
Bolt pattern (PCD): Number of studs and the diameter of the circle they sit on. It must match exactly.
Center bore: Diameter of the hub hole. Larger aftermarket bores need hub-centric rings.
Pressure: Recommended cold inflation pressure for that axle, in psi.
Thread size: Lug bolt or nut thread — needed when buying aftermarket fasteners.