2005 Porsche Cayman tire and wheel sizes, bolt pattern and tire pressure

Bolt pattern 5x130 on every 2005 trim.

Tires for the 2005 Porsche Cayman

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

235/40R18 front + 255/40R18 rear Best-rated standard on 1 trim · optional on 1

Check price on Amazon · 235/40R18 front Check price on Amazon · 255/40R18 rear
235/40R18 front + 265/40R18 rear Best-rated standard on 1 trim

Check price on Amazon · 235/40R18 front Check price on Amazon · 265/40R18 rear
235/35R19 front + 265/35R19 rear Best-rated optional on 2 trims

Check price on Amazon · 235/35R19 front Check price on Amazon · 265/35R19 rear

Also listed: 235/30R20 + 275/30R20

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Trims sold in 2005: 2
Generation: I (987)
Other years: 2005
2006
2007
2008
2009
2010
2011
2012
All years (2005–2016)

2 trims sold in 2005

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

Porsche Cayman I (987)

2005–2013 2 trims

Cayman 3.4 S 291 hp · 3.4L M 97/21 F6 235/40R18 91Y / 265/40R18 101Y 4 fitments

Generation: 987 · 2005–2013
Power: 291 hp
Engine: 3.4L M 97/21 F6, Petrol
Center bore: 71.6 mm
Bolt pattern: 5x130
Thread: M14 x 1.5

Check price on Amazon · 235/40R18 Check price on Amazon · 265/40R18 Wheels 18x8 ET57 · 5x130 · 71.6 mm on Amazon

Tire size	Rim size and bolt pattern	Pressure, psi
Front235/40R18 91Y	Rim 18x8 ET57 ~~5x130~~	29 psi
Rear265/40R18 101Y	Rim 18x9 ET43 ~~5x130~~	36 psi
Front235/40R18 91V	Rim 18x8 ET57 ~~5x130~~	29 psi
Rear255/40R18 95V	Rim 18x9 ET43 ~~5x130~~	36 psi
Front235/35R19 87Y	Rim 19x8 ET57 ~~5x130~~	32 psi
Rear265/35R19 94Y	Rim 19x9.5 ET46 ~~5x130~~	36 psi
Front235/35R19 91Y	Rim 19x8.5 ET55 ~~5x130~~	32 psi
Rear265/35R19 98Y	Rim 19x10 ET42 ~~5x130~~	36 psi

How to read 91Y: 91 is the load index (up to 1,356 lb / 615 kg per tire) and Y the speed rating (up to 186 mph / 300 km/h). ET57 is the wheel offset: how far the mounting face sits from the rim centre, in millimetres. Compare offsets in the wheel offset calculator.

Cayman 3.4 S Sport 299 hp · M 97/21 F6 235/40R18 91V / 255/40R18 95V 4 fitments

Generation: 987 · 2005–2013
Power: 299 hp
Engine: M 97/21 F6, Petrol
Center bore: 71.6 mm
Bolt pattern: 5x130
Thread: M14 x 1.5

Check price on Amazon · 235/40R18 Check price on Amazon · 255/40R18 Wheels 18x8 ET57 · 5x130 · 71.6 mm on Amazon

Tire size	Rim size and bolt pattern	Pressure, psi
Front235/40R18 91V	Rim 18x8 ET57 ~~5x130~~	29 psi
Rear255/40R18 95V	Rim 18x9 ET43 ~~5x130~~	36 psi
Front235/35R19 87Y	Rim 19x8 ET57 ~~5x130~~	32 psi
Rear265/35R19 94Y	Rim 19x9.5 ET46 ~~5x130~~	36 psi
Front235/35R19 87Y	Rim 19x8.5 ET55 ~~5x130~~	32 psi
Rear265/35R19 94Y	Rim 19x10 ET42 ~~5x130~~	36 psi
Front235/30R20 85Y	Rim 20x8.5 ET50 ~~5x130~~	33 psi
Rear275/30R20 93Y	Rim 20x10 ET40 ~~5x130~~	39 psi

How to read 91V: 91 is the load index (up to 1,356 lb / 615 kg per tire) and V the speed rating (up to 149 mph / 240 km/h). ET57 is the wheel offset: how far the mounting face sits from the rim centre, in millimetres.

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.
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.