2008 Subaru Impreza WRX STI tire and wheel sizes, bolt pattern and tire pressure

Check the tables below for every tire size, wheel size, bolt pattern (PCD), rim offset and tire pressure fitted to the 2008 Subaru Impreza WRX STI.

2008 Subaru Impreza WRX STI tire sizes

245/40R18 245/35R19 255/30R20

Bolt pattern

5x114.3

Other years

2004 2005 2006 2007 2008 2009 2010 2011 All 1992–2014

Fitment tables

4 trims sold in 2008

Open a trim for its factory package and every alternative size, front and rear.

Subaru Impreza WRX STI GR

2008 – 2014 4 trims

Impreza WRX STI 2.0T (CBA-GVB)

304 hp · EJ20 H4 245/40 ZR18 91Z 3 fitments

GenerationGR 2008–2014

MarketJapan

Power304 hp

EngineEJ20 H4, Petrol

Center bore56.1 mm

PCD5x114.3

ThreadM12 x 1.25

Tire size	Rim size and bolt pattern	Pressure, psi	Prices
245/40 ZR18 91Z	18x8.5 ET55 ~~5x114.3~~	33	Tires Rims
245/35 ZR19 91Z	19x8.5 ET53 ~~5x114.3~~	36	Tires Rims
255/30 ZR20 91Z	20x9 ET48 ~~5x114.3~~	36	Tires Rims

Impreza WRX STI 2.5T

305 hp · H4 245/40 ZR18 91W 3 fitments

GenerationGR 2008–2014

MarketUSA

Power305 hp

EngineH4, Petrol

Center bore56.1 mm

PCD5x114.3

ThreadM12 x 1.25

Tire size	Rim size and bolt pattern	Pressure, psi	Prices
245/40 ZR18 91W	18x8.5 ET55 ~~5x114.3~~	33	Tires Rims
245/35 ZR19 91W	19x8.5 ET52 ~~5x114.3~~	36	Tires Rims
255/30 ZR20 89Z	20x9 ET48 ~~5x114.3~~	36	Tires Rims

Impreza WRX STI 2.5T

296 hp · 2.5L EJ257 H4 245/40 ZR18 91Z 3 fitments

GenerationGR 2008–2014

MarketEurope

Power296 hp

Engine2.5L EJ257 H4, Petrol

Center bore56.1 mm

PCD5x114.3

ThreadM12 x 1.25

Tire size	Rim size and bolt pattern	Pressure, psi	Prices
245/40 ZR18 91Z	18x8.5 ET55 ~~5x114.3~~	33	Tires Rims
245/35 ZR19 91Z	19x8.5 ET53 ~~5x114.3~~	36	Tires Rims
255/30 ZR20 91Z	20x9 ET48 ~~5x114.3~~	36	Tires Rims

Impreza WRX STI 2.5T (CBA-GVF)

296 hp · EJ25 H4 245/40 ZR18 91Z 3 fitments

GenerationGR 2008–2014

MarketJapan

Power296 hp

EngineEJ25 H4, Petrol

Center bore56.1 mm

PCD5x114.3

ThreadM12 x 1.25

Tire size	Rim size and bolt pattern	Pressure, psi	Prices
245/40 ZR18 91Z	18x8.5 ET55 ~~5x114.3~~	33	Tires Rims
245/35 ZR19 91Z	19x8.5 ET53 ~~5x114.3~~	36	Tires Rims
255/30 ZR20 91Z	20x9 ET48 ~~5x114.3~~	36	Tires Rims

Reading the table

What these columns mean

OE fitment: The package fitted at the factory for that trim.
Alternative: A size the car accepts without modification — plus-sizing, winter setups or optional wheels.
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.
Staggered: A wider tire on the rear axle than the front. Front-to-back rotation is not possible.
Thread size: Lug bolt or nut thread — needed when buying aftermarket fasteners.