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1999 Mercury Mountaineer tire and wheel sizes, bolt pattern and tire pressure

Bolt pattern 5x114.3 on every 1999 trim.

Tires for the 1999 Mercury Mountaineer

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

  1. 235/75R15 Best-rated standard on 2 trims · optional on 2
    Check price on Amazon · 235/75R15
  2. 225/70R15 Best-rated standard on 2 trims
    Check price on Amazon · 225/70R15
  3. 235/70R16 Best-rated optional on 2 trims
    Check price on Amazon · 235/70R16

Also listed: 255/70R16 255/60R17 255/65R17 255/60R18 265/60R18 235/65R17 255/55R18

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Trims sold in 1999
4
Generation
UN105/150

4 trims sold in 1999

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

Mercury Mountaineer UN105/150

1997–2001 4 trims
Mountaineer 4.0i 202 hp · V6 225/70R15 106S 5 fitments
Generation
UN105/150 · 1997–2001
Power
202 hp
Engine
V6, Petrol
Center bore
70.5 mm
Bolt pattern
5x114.3
Thread
1/2" - 20 UNF
Check price on Amazon · 225/70R15 Wheels 15x6 ET12 · 5x114.3 · 70.5 mm on Amazon
Tire sizeRim size and bolt patternPressure, psi
225/70R15 106SRim 15x6 ET12 5x114.329 psi
235/75R15 108TRim 15x7 ET12 5x114.329 psi
235/70R16 105TRim 16x7 ET10 5x114.329 psi
235/65R17 105HRim 17x7 ET10 5x114.332 psi
255/60R17 105HRim 17x7.5 ET5 5x114.332 psi

How to read 106S: 106 is the load index (up to 2,094 lb / 950 kg per tire) and S the speed rating (up to 112 mph / 180 km/h). ET12 is the wheel offset: how far the mounting face sits from the rim centre, in millimetres. Compare offsets in the wheel offset calculator.

Mountaineer 4.0i 4WD 202 hp · V6 235/75R15 108T 5 fitments
Generation
UN105/150 · 1997–2001
Power
202 hp
Engine
V6, Petrol
Center bore
70.5 mm
Bolt pattern
5x114.3
Thread
1/2" - 20 UNF
Check price on Amazon · 235/75R15 Wheels 15x7 ET12 · 5x114.3 · 70.5 mm on Amazon
Tire sizeRim size and bolt patternPressure, psi
235/75R15 108TRim 15x7 ET12 5x114.329 psi
255/70R16 106TRim 16x7 ET12 5x114.329 psi
255/65R17 105TRim 17x7.5 ET5 5x114.332 psi
255/60R18 105TRim 18x7.5 ET5 5x114.332 psi
265/60R18 105HRim 18x8 ET0 5x114.333 psi

How to read 108T: 108 is the load index (up to 2,205 lb / 1,000 kg per tire) and T the speed rating (up to 118 mph / 190 km/h). ET12 is the wheel offset: how far the mounting face sits from the rim centre, in millimetres.

Mountaineer 5.0i 212 hp · V8 225/70R15 106S 5 fitments
Generation
UN105/150 · 1997–2001
Power
212 hp
Engine
V8, Petrol
Center bore
70.5 mm
Bolt pattern
5x114.3
Thread
1/2" - 20 UNF
Check price on Amazon · 225/70R15 Wheels 15x6 ET12 · 5x114.3 · 70.5 mm on Amazon
Tire sizeRim size and bolt patternPressure, psi
225/70R15 106SRim 15x6 ET12 5x114.329 psi
235/75R15 106TRim 15x7 ET12 5x114.329 psi
235/70R16 105TRim 16x7 ET10 5x114.329 psi
255/60R17 105TRim 17x7 ET10 5x114.332 psi
255/55R18 103HRim 18x8 ET0 5x114.333 psi

How to read 106S: 106 is the load index (up to 2,094 lb / 950 kg per tire) and S the speed rating (up to 112 mph / 180 km/h). ET12 is the wheel offset: how far the mounting face sits from the rim centre, in millimetres.

Mountaineer 5.0i AWD 212 hp · V8 235/75R15 108S 5 fitments
Generation
UN105/150 · 1997–2001
Power
212 hp
Engine
V8, Petrol
Center bore
70.5 mm
Bolt pattern
5x114.3
Thread
1/2" - 20 UNF
Check price on Amazon · 235/75R15 Wheels 15x7 ET12 · 5x114.3 · 70.5 mm on Amazon
Tire sizeRim size and bolt patternPressure, psi
235/75R15 108SRim 15x7 ET12 5x114.329 psi
255/70R16 108TRim 16x7 ET12 5x114.329 psi
255/65R17 106TRim 17x7.5 ET10 5x114.332 psi
255/60R18 105TRim 18x7.5 ET10 5x114.332 psi
265/60R18 105HRim 18x8 ET10 5x114.332 psi

How to read 108S: 108 is the load index (up to 2,205 lb / 1,000 kg per tire) and S the speed rating (up to 112 mph / 180 km/h). ET12 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 1999
4
Generation
UN105/150
Other years
All years (1997–2010)

Considering a different size?

Compare your current tire size with the one you want: diameter change, ground clearance and speedometer error.

Open the size calculator

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