tirewheelguide

2012 Fiat Siena tire and wheel sizes, bolt pattern and tire pressure

Bolt pattern 4x98 on every 2012 trim.

Tires for the 2012 Fiat Siena

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

  1. 175/65R14 Best-rated standard on 2 trims
    Check price on Amazon · 175/65R14
  2. 185/60R15 Best-rated standard on 1 trim
    Check price on Amazon · 185/60R15
  3. 185/60R14 Best-rated optional on 2 trims
    Check price on Amazon · 185/60R14

Also listed: 185/55R15 195/55R15 195/50R16

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Trims sold in 2012
3
Generation
178

3 trims sold in 2012

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

Fiat Siena 178

2008–2012 3 trims
Siena 1.0i 74 hp · I4 Flex-Fuel 175/65R14 82T 3 fitments
Generation
178 Facelift II · 2008–2012
Power
74 hp
Engine
I4 Flex-Fuel
Center bore
58.1 mm
Bolt pattern
4x98
Thread
M12 x 1.25
Check price on Amazon · 175/65R14 Wheels 14x5.5 ET44 · 4x98 · 58.1 mm on Amazon
Tire sizeRim size and bolt patternPressure, psi
175/65R14 82TRim 14x5.5 ET44 4x9829 psi
185/60R14 84TRim 14x5.5 ET44 4x9829 psi
185/55R15 82HRim 15x5.5 ET44 4x9830 psi

How to read 82T: 82 is the load index (up to 1,047 lb / 475 kg per tire) and T the speed rating (up to 118 mph / 190 km/h). ET44 is the wheel offset: how far the mounting face sits from the rim centre, in millimetres.

Siena 1.4i 84 hp · I4 Flex-Fuel 175/65R14 82T 3 fitments
Generation
178 Facelift II · 2008–2012
Power
84 hp
Engine
I4 Flex-Fuel
Center bore
58.1 mm
Bolt pattern
4x98
Thread
M12 x 1.25
Check price on Amazon · 175/65R14 Wheels 14x5.5 ET44 · 4x98 · 58.1 mm on Amazon
Tire sizeRim size and bolt patternPressure, psi
175/65R14 82TRim 14x5.5 ET44 4x9829 psi
185/60R14 84HRim 14x5.5 ET44 4x9829 psi
185/55R15 82HRim 15x6 ET34 4x9830 psi

How to read 82T: 82 is the load index (up to 1,047 lb / 475 kg per tire) and T the speed rating (up to 118 mph / 190 km/h). ET44 is the wheel offset: how far the mounting face sits from the rim centre, in millimetres.

Siena 1.8i 114 hp · I4 Flex-Fuel 185/60R15 84H 3 fitments
Generation
178 Facelift II · 2008–2012
Power
114 hp
Engine
I4 Flex-Fuel
Center bore
58.1 mm
Bolt pattern
4x98
Thread
M12 x 1.25
Check price on Amazon · 185/60R15 Wheels 15x5.5 ET44 · 4x98 · 58.1 mm on Amazon
Tire sizeRim size and bolt patternPressure, psi
185/60R15 84HRim 15x5.5 ET44 4x9829 psi
195/55R15 84HRim 15x6 ET34 4x9829 psi
195/50R16 82HRim 16x6 ET34 4x9830 psi

How to read 84H: 84 is the load index (up to 1,102 lb / 500 kg per tire) and H the speed rating (up to 130 mph / 210 km/h). ET44 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 2012
3
Generation
178
Other years
All years (1996–2012)

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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