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2005 Cadillac STS 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 2005 Cadillac STS.

2005 Cadillac STS tire sizes

235/50R17235/50R18255/45R18235/40R19255/45R17245/40R19255/40R19265/35R19275/40R19285/35R20
Bolt patterns
5x115
GM Sigma I
6x115
GM Sigma I
Other years
20042005200620072008200920102011 All 2004–2012
Fitment tables

3 trims sold in 2005

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

Cadillac STS GM Sigma I

2004 – 2007 USA market 3 trims

STS 3.6i

253 hp · 3.6L LY7 V6 235/50 R17 95V / 255/45 R17 95V 4 fitments
GenerationGM Sigma I 2004–2007
Power253 hp
Engine3.6L LY7 V6, Petrol
Center bore70.3 mm
PCD5x115
ThreadM12 x 1.5
Tire sizeRim size and bolt patternPressure, psiPrices
Front235/50 R17 95V17x7.5 ET51 5x11530TiresRims
Rear255/45 R17 95V17x8 ET51 5x11530TiresRims
Front235/50 ZR18 97W18x8 ET51 5x11530TiresRims
Rear255/45 ZR18 97W18x8 ET51 5x11530TiresRims
Front235/40 ZR19 95W19x8 ET50 5x11530TiresRims
Rear265/35 ZR19 95W19x8.5 ET50 5x11530TiresRims
235/50 R17 95S17x7.5 ET51 5x11530TiresRims

STS 4.4i

469 hp · 4.4L LC3 V8 255/45 ZR18 97Y / 275/40 ZR19 100Y 4 fitments
GenerationGM Sigma I 2004–2007
Power469 hp
Engine4.4L LC3 V8, Petrol
Center bore70.3 mm
PCD6x115
ThreadM12 x 1.5
Tire sizeRim size and bolt patternPressure, psiPrices
Front255/45 ZR18 97Y18x8.5 ET51 6x11530TiresRims
Rear275/40 ZR19 100Y19x9.5 ET56 6x11530TiresRims
Front255/40 ZR19 95Y19x8.5 ET51 6x11530TiresRims
Rear275/40 ZR19 100Y19x9.5 ET56 6x11533TiresRims
Front255/40 ZR19 95Y19x9 ET45 6x11532TiresRims
Rear285/35 ZR20 97Y20x10 ET45 6x11535TiresRims
255/45 R18 97V18x8 ET51 6x11530TiresRims

STS 4.6i

321 hp · 4.6L LH2 V8 235/50 R17 95V 4 fitments
GenerationGM Sigma I 2004–2007
Power321 hp
Engine4.6L LH2 V8, Petrol
Center bore70.3 mm
PCD5x115
ThreadM12 x 1.5
Tire sizeRim size and bolt patternPressure, psiPrices
235/50 R17 95V17x8 ET51 5x11530TiresRims
235/50 ZR18 97W18x8 ET51 5x11530TiresRims
235/40 ZR19 93W19x8.5 ET50 5x1152.4TiresRims
245/40 ZR19 95Y19x9 ET45 5x1152.4TiresRims
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.

Considering a different size?

Run your OE size against the one you want to see diameter change, ground clearance and speedometer error.

Open the size calculator
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