1999 Porsche 911 tire and wheel sizes, bolt pattern and tire pressure

Bolt pattern 5x130 on every 1999 trim.

Tires for the 1999 Porsche 911

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

  1. 205/50R17 Best-rated standard on 2 trims
  2. 205/50R17 front + 255/40R17 rear Best-rated standard on 2 trims
  3. 225/40R18 Best-rated standard on 1 trim · optional on 2

Also listed: 235/40R18 205/50R17 + 225/45R17 225/40R18 + 265/35R18

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Trims sold in 1999
6
Generation
VI (996)

6 trims sold in 1999

Open a trim for its tire and rim sizes, bolt pattern and tire pressure. Trims with the same tires and wheels share a row.

Porsche 911 VI (996)

1997–2006 6 trims
911 3.4 Carrera 2 +1 variant 296 hp · M 96/01 F6 205/50R17 89W / 255/40R17 90W 3 fitments

Same tires and wheels on: 3.4 Carrera 2 WLS

Generation
996 · 1997–2006
Power
296 hp
Engine
M 96/01 F6, Petrol
Center bore
71.6 mm
Bolt pattern
5x130
Thread
M14 x 1.5
Tire sizeRim size and bolt patternPressure, psi
Front205/50R17 89WRim 17x7 ET55 5x13036 psi
Rear255/40R17 90WRim 17x9 ET55 5x13036 psi
Front205/50R17 89TRim 17x7 ET55 5x13036 psi
Rear225/45R17 90TRim 17x8.5 ET50 5x13036 psi
Front225/40R18 88YRim 18x7.5 ET50 5x13036 psi
Rear265/35R18 91YRim 18x10 ET65 5x13044 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). ET55 is the wheel offset: how far the mounting face sits from the rim centre, in millimetres. Compare offsets in the wheel offset calculator.

911 3.4 Carrera 4 +1 variant 296 hp · M 96/01 F6 205/50R17 89T 3 fitments

Same tires and wheels on: 3.4 Carrera 4 WLS

Generation
996 · 1997–2006
Power
296 hp
Engine
M 96/01 F6, Petrol
Center bore
71.6 mm
Bolt pattern
5x130
Thread
M14 x 1.5
Tire sizeRim size and bolt patternPressure, psi
205/50R17 89TRim 17x8.5 ET50 5x13036 psi
205/50R17 89WRim 17x9 ET55 5x13036 psi
225/40R18 88YRim 18x10 ET65 5x13036 psi

How to read 89T: 89 is the load index (up to 1,279 lb / 580 kg per tire) and T the speed rating (up to 118 mph / 190 km/h). ET50 is the wheel offset: how far the mounting face sits from the rim centre, in millimetres.

911 3.6 GT2 456 hp · M 96/70 F6 235/40R18 88Y 1 fitment
Generation
996 · 1997–2006
Power
456 hp
Engine
M 96/70 F6, Petrol
Center bore
71.6 mm
Bolt pattern
5x130
Thread
M14 x 1.5
Tire sizeRim size and bolt patternPressure, psi
235/40R18 88YRim 18x12 ET45 5x13036 psi

How to read 88Y: 88 is the load index (up to 1,235 lb / 560 kg per tire) and Y the speed rating (up to 186 mph / 300 km/h). ET45 is the wheel offset: how far the mounting face sits from the rim centre, in millimetres.

911 3.6 GT3 355 hp · M 96/76 F6 225/40R18 88Y 1 fitment
Generation
996 · 1997–2006
Power
355 hp
Engine
M 96/76 F6, Petrol
Center bore
71.6 mm
Bolt pattern
5x130
Thread
M14 x 1.5
Tire sizeRim size and bolt patternPressure, psi
225/40R18 88YRim 18x10 ET65 5x13032 psi

How to read 88Y: 88 is the load index (up to 1,235 lb / 560 kg per tire) and Y the speed rating (up to 186 mph / 300 km/h). ET65 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
6
Generation
VI (996)
Other years
All years (1964–2027)

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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