1999 Porsche 911 Wheel Offset

Quick specs

Wheel size
7x17 · 7.5x18 · 8.5x18 · 8x18
Offset
ET55 · ET50 · ET40 · ET52
Backspacing
5.67 in · 5.72 in · 5.82 in · 6.05 in
Bolt pattern
5×130
Center bore
71.5 mm, 71.6 mm
Thread
M14×1.5
Tire size
205/50R17 · 225/40R18 · 235/40R18

OEM configurations

ConfigurationFrontRearOffsetBackspacingTireBolt patternCenter boreThread
3.4 Carrera 2 · M 96/01, F6, Petrol7x177x17ET555.67 in205/50R175x13071.6 mmM14 x 1.5
3.4 Carrera 2 · M 96/01, F6, Petrol7.5x187x17ET50 / ET555.72 in225/40R18 / 205/50R175x13071.6 mmM14 x 1.5
3.4 Carrera 2 WLS · M 96/01S, F6, Petrol7x177x17ET555.67 in205/50R175x13071.6 mmM14 x 1.5
3.4 Carrera 2 WLS · M 96/01S, F6, Petrol7.5x187x17ET50 / ET555.72 in225/40R18 / 205/50R175x13071.6 mmM14 x 1.5
3.4 Carrera 4 · M 96/01, F6, Petrol7x177x17ET555.67 in205/50R175x13071.6 mmM14 x 1.5
3.4 Carrera 4 · M 96/01, F6, Petrol7.5x187x17ET50 / ET555.72 in225/40R18 / 205/50R175x13071.6 mmM14 x 1.5
3.4 Carrera 4 WLS · M 96/01S, F6, Petrol7x177x17ET555.67 in205/50R175x13071.6 mmM14 x 1.5
3.4 Carrera 4 WLS · M 96/01S, F6, Petrol7.5x187x17ET50 / ET555.72 in225/40R18 / 205/50R175x13071.6 mmM14 x 1.5
3.6 GT2 · M 96/70, F6, Petrol8.5x188.5x18ET405.82 in235/40R185x13071.6 mmM14 x 1.5
3.6 GT3 · M 96/76, F6, Petrol8x188x18ET526.05 in225/40R185x13071.6 mmM14 x 1.5

Wheels and hardware

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Lug hardware

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  • Wheel Accessories Parts Set of 20 Chrome 9/16 Spline Lug Nuts Open End Cone Seat Bulge Acorn Small Diameter Locking Lugs 9/16"-18 Thread, 1" Length Wheel Lug Nuts with Key (20, Chrome)

    Confirmed vehicle catalog match. Confirm seat type for your wheel.

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  • DPAccessories BS27K5HE-BK04020 20 Black 14x1.5B Spline Tuner Lug Bolts for Aftermarket Wheels - 27mm Shank

    Confirmed vehicle catalog match. Confirm seat type for your wheel.

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  • MIKKUPPA 24pcs M14x1.5 One-Piece Chrome OEM Factory Style Large Acorn Seat Lug Nuts Replacement for 2005-2019 Chrysler 300, 2011-2017 Dodge Durango, 2010-2017 Chevy Camaro Factory Wheels

    Confirmed vehicle catalog match. Confirm seat type for your wheel.

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Wheel locks

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Real-World 1999 Porsche 911 Wheel Setups

Observed aftermarket setups from documented Modified1 builds. These are individual build records — not OEM specifications and not clearance guarantees for every vehicle.

Common custom wheel sizes

Among builds in our database for this model year:

  • 18-inch — 1 documented build

1 documented build.

1999 Porsche 911 custom wheel setup

Staggered · 18×10.5 / 18×13

Documented on a 1999 Porsche 911 build — observed custom fitment, not a universal fit guarantee.

Wheel: Brixton Classic VL20

Front
18×10.5 · 225/40R18
Rear
18×13 · 265/35R18

Compare your own setup

See how a different width or offset sits versus an OEM configuration for this year.

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More specs for the 1999 Porsche 911

Each OEM row is a catalog configuration. Offset ranges are not collapsed when the database has exact setups. Documented aftermarket builds are observed setups only — not universal fit or clearance confirmation.