Chevrolet USA C10

All makes › Chevrolet USA › C10 › 1985

Cold pressures. Final-tighten wheel nuts with a calibrated torque wrench, never an impact gun. Re-check after 25–50 miles.

Wheel nut torque · 1985

120 Nm

225/75R15, 235/75R15

4 bolts

5 bolts

6 bolts

Use the star / cross order that matches the wheel. Start fasteners by hand. Seat the wheel flush on the hub before final torque. Recheck after 25–50 miles. Confirm against the vehicle placard and handbook.

Pressures Torque Placard Location

Workshop checks

When to torque: every time a wheel is off — tyres, punctures, seasonal swap, brakes.

Seat first: the wheel must sit flush on the hub. Dirt or rust under the wheel means the wrench number is meaningless.

Match the seat: conical, ball/radius and flat/washer seats are not interchangeable. Thread size alone is not enough.

Recheck: after 25–50 miles check the same figure again. Do not add extra Nm.

Conicaltapered cone — angle must match the wheel

Ball / radiusrounded seat — common on some OEM alloys

Flat / washerflat clamp, often with a shank and washer

Pressures

Tyre	Normal F/R	Laden F/R	Eco F/R	Torque
225/75R15	32 PSI / 34 PSI	—	—	120 Nm
235/75R15	32 PSI / 34 PSI	—	—	120 Nm

Fitment specs

1962 Bolt Pattern: 6x139.7. Recorded centre bore (mm): 78.Wheel offset (ET)Recorded offset (ET mm):
1962 Bolt Pattern: 6x139.7. Recorded centre bore (mm): 78.Wheel offset (ET)Recorded offset (ET mm):
1962 Bolt Pattern: 6x139.7. Recorded centre bore (mm): 78.Wheel offset (ET)Recorded offset (ET mm):
1962 Bolt Pattern: 6x139.7. Recorded centre bore (mm): 78.Wheel offset (ET)Recorded offset (ET mm):
1962 Centre Bore: 7881 - 87Tyre sizes225/75R15235/75R15PCD: 6x139.7Front Offset: 13Rear Offset: 13
1962 Centre Bore: 7881 - 87Tyre sizes225/75R15235/75R15PCD: 6x139.7Front Offset: 13Rear Offset: 13
1962 Centre Bore: 7881 - 87Tyre sizes225/75R15235/75R15PCD: 6x139.7Front Offset: 13Rear Offset: 13
1962 Centre Bore: 7881 - 87Tyre sizes225/75R15235/75R15PCD: 6x139.7Front Offset: 13Rear Offset: 13
1962 Offset: centre-bore/","name":"Chevrolet USA C10 Wheel Fitment, PCD, Offset & Centre Bore
1962 Offset: 13Rear Offset: 13Centre Bore: 7881 - 87Tyre sizes225/75R15235/75R15PCD: 6x139.7F
1962 Offset: 13Rear Offset: 13Centre Bore: 7881 - 87Tyre sizes225/75R15235/75R15PCD: 6x139.7F
1962 Offset: 13Rear Offset: 13Centre Bore: 7881 - 87Tyre sizes225/75R15235/75R15PCD: 6x139.7F
1962 PCD: offset-centre-bore/","name":"Chevrolet USA C10 Wheel Fitment, PCD, Offset & Cent
1962 PCD: 6x139.7Front Offset: 13Rear Offset: 13Centre Bore: 7881 - 87Tyre sizes225/75R152
1962 PCD: 6x139.7Front Offset: 13Rear Offset: 13Centre Bore: 7881 - 87Tyre sizes225/75R152
1962 PCD: 6x139.7Front Offset: 13Rear Offset: 13Centre Bore: 7881 - 87Tyre sizes225/75R152
1981 Centre bore: 78
1981 Front offset: 13
1981 PCD: 6x139.7
1981 Rear offset: 13
1981 Centre bore: 78
1981 Front offset: 13
1981 PCD: 6x139.7
1981 Rear offset: 13
1982 Centre bore: 78
1982 Front offset: 13
1982 PCD: 6x139.7
1982 Rear offset: 13
1982 Centre bore: 78
1982 Front offset: 13
1982 PCD: 6x139.7
1982 Rear offset: 13
1983 Centre bore: 78
1983 Front offset: 13
1983 PCD: 6x139.7
1983 Rear offset: 13
1983 Centre bore: 78
1983 Front offset: 13
1983 PCD: 6x139.7
1983 Rear offset: 13
1984 Centre bore: 78
1984 Front offset: 13
1984 PCD: 6x139.7
1984 Rear offset: 13
1984 Centre bore: 78
1984 Front offset: 13
1984 PCD: 6x139.7
1984 Rear offset: 13
1985 Centre bore: 78
1985 Front offset: 13
1985 PCD: 6x139.7
1985 Rear offset: 13
1985 Centre bore: 78
1985 Front offset: 13
1985 PCD: 6x139.7
1985 Rear offset: 13
1986 Centre bore: 78
1986 Front offset: 13
1986 PCD: 6x139.7
1986 Rear offset: 13