tirewheelguide

2011 Porsche Boxster tire and wheel sizes, bolt pattern and tire pressure

Bolt pattern 5x130 on every 2011 trim.

Tires for the 2011 Porsche Boxster

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

  1. 235/40R18 front + 265/40R18 rear Best-rated standard on 1 trim · optional on 1
    Check price on Amazon · 235/40R18 front Check price on Amazon · 265/40R18 rear
  2. 205/55R17 front + 235/50R17 rear Best-rated standard on 1 trim
    Check price on Amazon · 205/55R17 front Check price on Amazon · 235/50R17 rear
  3. 235/40R18 Best-rated standard on 1 trim
    Check price on Amazon · 235/40R18

Also listed: 235/40R18 + 255/40R18 235/35R19 + 265/35R19 235/35R19 235/30R20 235/30R20 + 265/30R20

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Trims sold in 2011
3
Generation
II (987)

3 trims sold in 2011

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

Porsche Boxster II (987)

2005–2012 3 trims
Boxster 2.9 252 hp · 2.9L MA 120 F6 205/55R17 91Y / 235/50R17 96Y 6 fitments
Generation
987 · 2005–2012
Power
252 hp
Engine
2.9L MA 120 F6, Petrol
Center bore
71.6 mm
Bolt pattern
5x130
Thread
M14 x 1.5
Check price on Amazon · 205/55R17 Check price on Amazon · 235/50R17 Wheels 17x7 ET55 · 5x130 · 71.6 mm on Amazon
Tire sizeRim size and bolt patternPressure, psi
Front205/55R17 91YRim 17x7 ET55 5x13029 psi
Rear235/50R17 96YRim 17x8.5 ET40 5x13030 psi
Front205/55R17 91VRim 17x7 ET55 5x13029 psi
Rear235/50R17 96VRim 17x8.5 ET40 5x13030 psi
Front235/40R18 91VRim 18x8 ET57 5x13029 psi
Rear255/40R18 95VRim 18x9 ET43 5x13030 psi
Front235/40R18 91YRim 18x8 ET57 5x13029 psi
Rear265/40R18 101YRim 18x9 ET43 5x13030 psi
Front235/35R19 87YRim 19x8 ET57 5x13032 psi
Rear265/35R19 94YRim 19x9.5 ET46 5x13033 psi
Front235/35R19 87YRim 19x8.5 ET55 5x13032 psi
Rear265/35R19 94YRim 19x10 ET42 5x13033 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). ET55 is the wheel offset: how far the mounting face sits from the rim centre, in millimetres. Compare offsets in the wheel offset calculator.

Boxster 3.4 S 306 hp · 3.4L MA 121 F6 235/40R18 91Y / 265/40R18 101Y 5 fitments
Generation
987 · 2005–2012
Power
306 hp
Engine
3.4L MA 121 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 sizeRim size and bolt patternPressure, psi
Front235/40R18 91YRim 18x8 ET57 5x13029 psi
Rear265/40R18 101YRim 18x9 ET43 5x13030 psi
Front235/40R18 91VRim 18x8 ET57 5x13029 psi
Rear255/40R18 95VRim 18x9 ET43 5x13030 psi
Front235/35R19 87YRim 19x8 ET57 5x13032 psi
Rear265/35R19 94YRim 19x9.5 ET46 5x13033 psi
Front235/35R19 87YRim 19x8.5 ET55 5x13032 psi
Rear265/35R19 94YRim 19x10 ET42 5x13033 psi
Front235/30R20 85YRim 20x8.5 ET50 5x13033 psi
Rear265/30R20 92YRim 20x10 ET40 5x13036 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.

Boxster 3.4 Spyder 315 hp · 3.4L MA 121C F6 235/40R18 91V 4 fitments
Generation
987 · 2005–2012
Power
315 hp
Engine
3.4L MA 121C F6, Petrol
Center bore
71.6 mm
Bolt pattern
5x130
Thread
M14 x 1.5
Check price on Amazon · 235/40R18 Wheels 18x9 ET43 · 5x130 · 71.6 mm on Amazon
Tire sizeRim size and bolt patternPressure, psi
235/40R18 91VRim 18x9 ET43 5x13029 psi
235/35R19 87YRim 19x9.5 ET46 5x13032 psi
235/35R19 87YRim 19x10 ET42 5x13032 psi
235/30R20 85YRim 20x10 ET40 5x13033 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). ET43 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.
Trims sold in 2011
3
Generation
II (987)
Other years
All years (1996–2017)

Considering a different size?

Compare your current tire size with the one you want: diameter change, ground clearance and speedometer error.

Open the size calculator

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