1991 Isuzu Bighorn tire and wheel sizes, bolt pattern and tire pressure

Bolt pattern 6x139.7 on every 1991 trim.

Tires for the 1991 Isuzu Bighorn

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

215xR15 standard on 5 trims

Check price on Amazon · 215xR15
245/70R16 Best-rated standard on 4 trims · optional on 9

Check price on Amazon · 245/70R16
225/75R15 Best-rated standard on 4 trims

Check price on Amazon · 225/75R15

Also listed: 10.5x0R15 205/80R16 255/65R16 265/60R17 265/70R16 255/65R17 275/55R18

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Trims sold in 1991: 13
Generations: UBS25/69 UBS17/55
Other years: 1987
1988
1989
1990
1991
1992
1993
1994
All years (1981–2002)

13 trims sold in 1991

Open a trim for its tire and rim sizes, bolt pattern and tire pressure. Trims with the same tires and wheels share a row.

Isuzu Bighorn UBS25/69

1991–1998 4 trims

Bighorn 3.1TD (Q-UBS69DW) +3 variants 123 hp · 4JG2 I4 · Diesel 245/70SR16 4 fitments

Same tires and wheels on: 3.1TD (Q-UBS69GW), 3.2i (E-UBS25DW), 3.2i (E-UBS25GW)

Generation: UBS25/69 · 1991–1998
Power: 123 hp
Engine: 4JG2 I4, Diesel
Center bore: 108.1 mm
Bolt pattern: 6x139.7
Thread: M12 x 1.5

Check price on Amazon · 245/70R16 Wheels 16x7 ET38 · 6x139.7 · 108.1 mm on Amazon

Tire size	Rim size and bolt pattern	Pressure, psi
245/70SR16	Rim 16x7 ET38 ~~6x139.7~~	32 psi
265/70SR16	Rim 16x7.5 ET35 ~~6x139.7~~	32 psi
255/65SR17	Rim 17x7.5 ET35 ~~6x139.7~~	32 psi
275/55HR18	Rim 18x8 ET30 ~~6x139.7~~	32 psi

Isuzu Bighorn UBS17/55

1981–1991 9 trims

Bighorn 2.6i (E-UBS17CW) +3 variants 118 hp · 4ZE1 I4 225/75SR15 6 fitments

Same tires and wheels on: 2.6i (E-UBS17FW), 2.8TD (Q-UBS55CW), 2.8TD (S-UBS55CK)

Generation: UBS17/55 · 1981–1991
Power: 118 hp
Engine: 4ZE1 I4, Petrol
Center bore: 108.1 mm
Bolt pattern: 6x139.7
Thread: M12 x 1.5

Check price on Amazon · 225/75R15 Wheels 15x6 ET38 · 6x139.7 · 108.1 mm on Amazon

Tire size	Rim size and bolt pattern	Pressure, psi
225/75SR15	Rim 15x6 ET38 ~~6x139.7~~	30 psi
10.5x0 R15	Rim 15x7 ET33 ~~6x139.7~~	30 psi
205/80SR16	Rim 16x6 ET38 ~~6x139.7~~	30 psi
245/70SR16	Rim 16x7 ET38 ~~6x139.7~~	30 psi
255/65HR16	Rim 16x7.5 ET33 ~~6x139.7~~	30 psi
265/60HR17	Rim 17x8 ET30 ~~6x139.7~~	30 psi

Bighorn 2.8TD (Q-UBS55FW) +3 variants 114 hp · 1JB1-T I4 · Diesel 215x SR15 6 fitments

Same tires and wheels on: 2.8TD (Q-UBS55FWR), 2.8TD (S-UBS55CM), 2.8TD (S-UBS55FK)

Generation: UBS17/55 · 1981–1991
Power: 114 hp
Engine: 1JB1-T I4, Diesel
Center bore: 108.1 mm
Bolt pattern: 6x139.7
Thread: M12 x 1.5

Check price on Amazon · 215xR15 Wheels 15x6 ET38 · 6x139.7 · 108.1 mm on Amazon

Tire size	Rim size and bolt pattern	Pressure, psi
215x SR15	Rim 15x6 ET38 ~~6x139.7~~	30 psi
10.5x0 R15	Rim 15x7 ET33 ~~6x139.7~~	30 psi
205/80SR16	Rim 16x6 ET38 ~~6x139.7~~	30 psi
245/70SR16	Rim 16x7 ET38 ~~6x139.7~~	30 psi
255/65HR16	Rim 16x7.5 ET33 ~~6x139.7~~	30 psi
265/60HR17	Rim 17x8 ET30 ~~6x139.7~~	30 psi

Bighorn 2.8TD (S-UBS55FM) 114 hp · 1JB1-T I4 · Diesel 215x SR15 6 fitments

Generation: UBS17/55 · 1981–1991
Power: 114 hp
Engine: 1JB1-T I4, Diesel
Center bore: 108.1 mm
Bolt pattern: 6x139.7
Thread: M12 x 1.5

Check price on Amazon · 215xR15 Wheels 15x6 ET38 · 6x139.7 · 108.1 mm on Amazon

Tire size	Rim size and bolt pattern	Pressure, psi
215x SR15	Rim 15x6 ET38 ~~6x139.7~~	30 psi
10.5x0 R15	Rim 15x7 ET33 ~~6x139.7~~	30 psi
205/80SR16	Rim 16x6 ET38 ~~6x139.7~~	30 psi
245/70R16 106S	Rim 16x7 ET38 ~~6x139.7~~	30 psi
255/65SR16	Rim 16x7.5 ET33 ~~6x139.7~~	29 psi
265/60R17 105S	Rim 17x8 ET30 ~~6x139.7~~	30 psi

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 1991: 13
Generations: UBS25/69 UBS17/55
Other years: 1987
1988
1989
1990
1991
1992
1993
1994
All years (1981–2002)

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