tirewheelguide

1999 Porsche Boxster tire and wheel sizes, bolt pattern and tire pressure

Bolt pattern 5x130 on every 1999 trim.

Tires for the 1999 Porsche Boxster

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

  1. 205/55R16 front + 225/50R16 rear Best-rated standard on 2 trims
    Check price on Amazon · 205/55R16 front Check price on Amazon · 225/50R16 rear
  2. 205/50R17 Best-rated standard on 1 trim
    Check price on Amazon · 205/50R17
  3. 205/50R17 front + 255/40R17 rear Best-rated optional on 2 trims
    Check price on Amazon · 205/50R17 front Check price on Amazon · 255/40R17 rear

Also listed: 225/40R18 + 265/35R18 225/45R17 225/40R18

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Trims sold in 1999
3
Generation
I (986)

3 trims sold in 1999

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

Porsche Boxster I (986)

1996–2004 3 trims
Boxster 2.5 201 hp · 2.5L M 96/20 F6 205/55R16 89W / 225/50R16 92W 6 fitments
Generation
986 · 1996–2004
Power
201 hp
Engine
2.5L M 96/20 F6, Petrol
Center bore
71.6 mm
Bolt pattern
5x130
Thread
M14 x 1.5
Check price on Amazon · 205/55R16 Check price on Amazon · 225/50R16 Wheels 16x6 ET50 · 5x130 · 71.6 mm on Amazon
Tire sizeRim size and bolt patternPressure, psi
Front205/55R16 89WRim 16x6 ET50 5x13029 psi
Rear225/50R16 92WRim 16x7 ET40 5x13036 psi
Front205/55R16 89TRim 16x6 ET50 5x13029 psi
Rear225/50R16 92TRim 16x7 ET40 5x13036 psi
Front205/50R17 89WRim 17x7 ET55 5x13029 psi
Rear255/40R17 90WRim 17x8.5 ET50 5x13036 psi
Front205/50R17 89TRim 17x7 ET55 5x13029 psi
Rear255/40R17 90TRim 17x8.5 ET50 5x13036 psi
Front205/50R17 89TRim 17x7 ET55 5x13029 psi
Rear255/40R17 94TRim 17x8.5 ET50 5x13036 psi
Front225/40R18 88WRim 18x7.5 ET50 5x13029 psi
Rear265/35R18 93WRim 18x9 ET52 5x13036 psi

How to read 89W: 89 is the load index (up to 1,279 lb / 580 kg per tire) and W the speed rating (up to 168 mph / 270 km/h). ET50 is the wheel offset: how far the mounting face sits from the rim centre, in millimetres. Compare offsets in the wheel offset calculator.

Boxster 2.7 217 hp · 2.7L M 96/22 F6 205/55R16 89W / 225/50R16 92W 6 fitments
Generation
986 · 1996–2004
Power
217 hp
Engine
2.7L M 96/22 F6, Petrol
Center bore
71.6 mm
Bolt pattern
5x130
Thread
M14 x 1.5
Check price on Amazon · 205/55R16 Check price on Amazon · 225/50R16 Wheels 16x6 ET50 · 5x130 · 71.6 mm on Amazon
Tire sizeRim size and bolt patternPressure, psi
Front205/55R16 89WRim 16x6 ET50 5x13029 psi
Rear225/50R16 92WRim 16x7 ET40 5x13036 psi
Front205/55R16 89TRim 16x6 ET50 5x13029 psi
Rear225/50R16 92TRim 16x7 ET40 5x13036 psi
Front205/50R17 89WRim 17x7 ET55 5x13029 psi
Rear255/40R17 90WRim 17x8.5 ET50 5x13036 psi
Front205/50R17 89TRim 17x7 ET55 5x13029 psi
Rear255/40R17 90TRim 17x8.5 ET50 5x13036 psi
Front205/50R17 89TRim 17x7 ET55 5x13029 psi
Rear255/40R17Rim 17x8.5 ET50 5x13036 psi
Front225/40R18 88WRim 18x7.5 ET50 5x13029 psi
Rear265/35R18 93WRim 18x9 ET52 5x13036 psi

How to read 89W: 89 is the load index (up to 1,279 lb / 580 kg per tire) and W the speed rating (up to 168 mph / 270 km/h). ET50 is the wheel offset: how far the mounting face sits from the rim centre, in millimetres.

Boxster 3.2 S 248 hp · 3.2L M 96/21 F6 205/50R17 89W 6 fitments
Generation
986 · 1996–2004
Power
248 hp
Engine
3.2L M 96/21 F6, Petrol
Center bore
71.6 mm
Bolt pattern
5x130
Thread
M14 x 1.5
Check price on Amazon · 205/50R17 Wheels 17x8.5 ET50 · 5x130 · 71.6 mm on Amazon
Tire sizeRim size and bolt patternPressure, psi
205/50R17 89WRim 17x8.5 ET50 5x13029 psi
205/50R17 89TRim 17x8.5 ET50 5x13029 psi
205/50R17 89TRim 17x8.5 ET50 5x13029 psi
225/45R17 91WRim 17x8.5 ET50 5x13029 psi
225/40R18 88WRim 18x9 ET52 5x13029 psi
225/40R18 88YRim 18x10 ET45 5x13029 psi

How to read 89W: 89 is the load index (up to 1,279 lb / 580 kg per tire) and W the speed rating (up to 168 mph / 270 km/h). ET50 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 1999
3
Generation
I (986)
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.

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