tirewheelguide

2004 Smart Roadster tire and wheel sizes, bolt pattern and tire pressure

Bolt pattern 3x112.5 on every 2004 trim.

Tires for the 2004 Smart Roadster

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

  1. 205/50R15 Best-rated standard on 1 trim · optional on 1
    Check price on Amazon · 205/50R15
  2. 185/55R15 Best-rated standard on 1 trim
    Check price on Amazon · 185/55R15
  3. 205/40R17 front + 225/35R17 rear Best-rated standard on 1 trim
    Check price on Amazon · 205/40R17 front Check price on Amazon · 225/35R17 rear

Also listed: 205/45R16 205/40R17 215/35R18 + 225/35R18

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Trims sold in 2004
3
Generation
I (W452)

3 trims sold in 2004

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

Smart Roadster I (W452)

2003–2006 3 trims
Roadster 0.7T 60 hp · 0.7L M 160 E 7 AL I3 185/55R15 82H / 185/55R15 82H 3 fitments
Generation
W452 · 2003–2006
Power
60 hp
Engine
0.7L M 160 E 7 AL I3, Petrol
Center bore
57.1 mm
Bolt pattern
3x112.5
Thread
M12 x 1.5
Check price on Amazon · 185/55R15 Check price on Amazon · 185/55R15 Wheels 15x5 ET24 · 3x112.5 · 57.1 mm on Amazon
Tire sizeRim size and bolt patternPressure, psi
Front185/55R15 82HRim 15x5 ET24 3x112.523 psi
Rear185/55R15 82HRim 15x6 ET-20 3x112.530 psi
Front205/50R15 86HRim 15x6 ET24 3x112.523 psi
Rear205/50R15 86HRim 15x7 ET-15.5 3x112.530 psi
Front205/45R16 83HRim 16x6.5 ET24 3x112.523 psi
Rear205/45R16 83HRim 16x7 ET-20 3x112.530 psi

How to read 82H: 82 is the load index (up to 1,047 lb / 475 kg per tire) and H the speed rating (up to 130 mph / 210 km/h). ET24 is the wheel offset: how far the mounting face sits from the rim centre, in millimetres. Compare offsets in the wheel offset calculator.

Roadster 0.7T 99 hp · 0.7L M 160.923 I3 205/40R17 80Y / 225/35R17 82Y 2 fitments
Generation
W452 · 2003–2006
Power
99 hp
Engine
0.7L M 160.923 I3, Petrol
Center bore
57.1 mm
Bolt pattern
3x112.5
Thread
M12 x 1.5
Check price on Amazon · 205/40R17 Check price on Amazon · 225/35R17 Wheels 17x7 ET20 · 3x112.5 · 57.1 mm on Amazon
Tire sizeRim size and bolt patternPressure, psi
Front205/40R17 80YRim 17x7 ET20 3x112.5–
Rear225/35R17 82YRim 17x8 ET-15 3x112.5–
Front215/35R18 84YRim 18x7 ET20 3x112.5–
Rear225/35R18 87YRim 18x8.5 ET-25 3x112.5–

How to read 80Y: 80 is the load index (up to 992 lb / 450 kg per tire) and Y the speed rating (up to 186 mph / 300 km/h). ET20 is the wheel offset: how far the mounting face sits from the rim centre, in millimetres.

Roadster 0.7T 80 hp · 0.7L M 160.922 I3 205/50R15 86H 3 fitments
Generation
W452 · 2003–2006
Power
80 hp
Engine
0.7L M 160.922 I3, Petrol
Center bore
57.1 mm
Bolt pattern
3x112.5
Thread
M12 x 1.5
Check price on Amazon · 205/50R15 Wheels 15x7 ET-15.5 · 3x112.5 · 57.1 mm on Amazon
Tire sizeRim size and bolt patternPressure, psi
205/50R15 86HRim 15x7 ET-15.5 3x112.5–
205/45R16 83HRim 16x7 ET-20 3x112.5–
205/40R17 80HRim 17x8 ET-15 3x112.5–

How to read 86H: 86 is the load index (up to 1,168 lb / 530 kg per tire) and H the speed rating (up to 130 mph / 210 km/h). ET-15.5 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 2004
3
Generation
I (W452)
Other years
All years (2003–2006)

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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