2005 MG ZT tire and wheel sizes, bolt pattern and tire pressure

Bolt pattern 5x100 on every 2005 trim.

Tires for the 2005 MG ZT

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

  1. 225/45R18 Best-rated standard on 5 trims
  2. 255/35R19 Best-rated optional on 2 trims
  3. 235/45R18 Best-rated optional on 1 trim

Also listed: 245/40R18 255/40R18 225/40R19 235/40R19 245/35R19 225/35R20 255/30R20

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Trims sold in 2005
5
Generation
I

5 trims sold in 2005

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

MG ZT I

2001–2005 5 trims
ZT 1.8i 118 hp · I4 225/45R18 91V 3 fitments
Generation
I · 2001–2005
Power
118 hp
Engine
I4, Petrol
Center bore
56.1 mm
Bolt pattern
5x100
Thread
M14 x 1.5
Tire sizeRim size and bolt patternPressure, psi
225/45R18 91VRim 18x7.5 ET50 5x10033 psi
225/40R19 90VRim 19x7.5 ET47 5x10033 psi
225/35R20 90WRim 20x8 ET45 5x10036 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). ET50 is the wheel offset: how far the mounting face sits from the rim centre, in millimetres. Compare offsets in the wheel offset calculator.

ZT 1.8T 158 hp · 1.8L I4 225/45R18 91V 3 fitments
Generation
I · 2001–2005
Power
158 hp
Engine
1.8L I4, Petrol
Center bore
56.1 mm
Bolt pattern
5x100
Thread
M14 x 1.5
Tire sizeRim size and bolt patternPressure, psi
225/45R18 91VRim 18x7.5 ET50 5x10033 psi
245/40R18 90VRim 18x8 ET47 5x10033 psi
245/35R19 90WRim 19x8.5 ET43 5x10036 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). ET50 is the wheel offset: how far the mounting face sits from the rim centre, in millimetres.

ZT 2.0CDTI 129 hp · 2.0L I4 · Diesel 225/45R18 91V 3 fitments
Generation
I · 2001–2005
Power
129 hp
Engine
2.0L I4, Diesel
Center bore
56.1 mm
Bolt pattern
5x100
Thread
M14 x 1.5
Tire sizeRim size and bolt patternPressure, psi
225/45R18 91VRim 18x7.5 ET50 5x10033 psi
235/45R18 92VRim 18x8 ET47 5x10033 psi
235/40R19 90VRim 19x8 ET45 5x10033 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). ET50 is the wheel offset: how far the mounting face sits from the rim centre, in millimetres.

ZT 2.5i 188 hp · V6 225/45R18 91W 3 fitments
Generation
I · 2001–2005
Power
188 hp
Engine
V6, Petrol
Center bore
56.1 mm
Bolt pattern
5x100
Thread
M14 x 1.5
Tire sizeRim size and bolt patternPressure, psi
225/45R18 91WRim 18x7.5 ET50 5x10033 psi
255/40R18 91WRim 18x8.5 ET45 5x10033 psi
255/35R19 90ZRim 19x8.5 ET43 5x10036 psi

How to read 91W: 91 is the load index (up to 1,356 lb / 615 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.

ZT 4.6i ZT-T 256 hp · V8 225/45R18 91W 3 fitments
Generation
I · 2001–2005
Power
256 hp
Engine
V8, Petrol
Center bore
56.1 mm
Bolt pattern
5x100
Thread
M14 x 1.5
Tire sizeRim size and bolt patternPressure, psi
225/45R18 91WRim 18x7.5 ET50 5x10033 psi
255/35R19 90WRim 19x8.5 ET43 5x10036 psi
255/30R20 89ZRim 20x9 ET38 5x10036 psi

How to read 91W: 91 is the load index (up to 1,356 lb / 615 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.
Thread size
Lug bolt or nut thread — needed when buying aftermarket fasteners.
Trims sold in 2005
5
Generation
I
Other years
All years (2001–2005)

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