Chevrolet USA C1500

All makes › Chevrolet USA › C1500 › 1991

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

Wheel nut torque · 1991

190 Nm

225/75R15, 235/75R15, 245/75R16, 265/75R16, 275/60R15

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	39 PSI / 39 PSI	—	—	190 Nm
235/75R15	39 PSI / 39 PSI	—	—	190 Nm
245/75R16	39 PSI / 39 PSI	—	—	190 Nm
265/75R16	39 PSI / 39 PSI	—	—	190 Nm
275/60R15	39 PSI / 39 PSI	—	—	190 Nm

Fitment specs

1988 Bolt Pattern: 5 X 127. Recorded centre bore (mm): 77.8.Wheel offset (ET)Recorded offset (ET mm
1988 Bolt Pattern: 5 X 127. Recorded centre bore (mm): 77.8.Wheel offset (ET)Recorded offset (ET mm
1988 Bolt Pattern: 5 X 127. Recorded centre bore (mm): 77.8.Wheel offset (ET)Recorded offset (ET mm
1988 Bolt Pattern: 5 X 127. Recorded centre bore (mm): 77.8.Wheel offset (ET)Recorded offset (ET mm
1988 Centre Bore: 77.8Sponsored(adsbygoogle=window.adsbygoogle||[]).push({});Understanding wheel f
1988 Centre Bore: 77.8SponsoredUnderstanding wheel fitment measurements: Chevrolet USA C1500PCD an
1988 Centre Bore: 77.8SponsoredUnderstanding wheel fitment measurements: Chevrolet USA C1500PCD an
1988 Centre Bore: 77.8SponsoredUnderstanding wheel fitment measurements: Chevrolet USA C1500PCD an
1988 Offset: centre-bore/","name":"Chevrolet USA C1500 Wheel Fitment, PCD, Offset & Centre Bo
1988 Offset: 11Rear Offset: 11Centre Bore: 77.8SponsoredUnderstanding wheel fitment measureme
1988 Offset: 11Rear Offset: 11Centre Bore: 77.8SponsoredUnderstanding wheel fitment measureme
1988 Offset: 11Rear Offset: 11Centre Bore: 77.8SponsoredUnderstanding wheel fitment measureme
1988 PCD: offset-centre-bore/","name":"Chevrolet USA C1500 Wheel Fitment, PCD, Offset & Ce
1988 PCD: 5 X 127Front Offset: 11Rear Offset: 11Centre Bore: 77.8SponsoredUnderstanding wh
1988 PCD: 5 X 127Front Offset: 11Rear Offset: 11Centre Bore: 77.8SponsoredUnderstanding wh
1988 PCD: 5 X 127Front Offset: 11Rear Offset: 11Centre Bore: 77.8SponsoredUnderstanding wh
1988 Centre bore: 77.8
1988 Front offset: 11
1988 PCD: 5 X 127
1988 Rear offset: 11
1988 Centre bore: 77.8
1988 Front offset: 11
1988 PCD: 5 X 127
1988 Rear offset: 11
1988 Centre bore: 77.8
1988 Front offset: 11
1988 PCD: 5 X 127
1988 Rear offset: 11
1988 Centre bore: 77.8
1988 Front offset: 11
1988 PCD: 5 X 127
1988 Rear offset: 11
1988 Centre bore: 77.8
1988 Front offset: 11
1988 PCD: 5 X 127
1988 Rear offset: 11
1989 Centre bore: 77.8
1989 Front offset: 11
1989 PCD: 5 X 127
1989 Rear offset: 11
1989 Centre bore: 77.8
1989 Front offset: 11
1989 PCD: 5 X 127
1989 Rear offset: 11
1989 Centre bore: 77.8
1989 Front offset: 11
1989 PCD: 5 X 127
1989 Rear offset: 11
1989 Centre bore: 77.8
1989 Front offset: 11
1989 PCD: 5 X 127
1989 Rear offset: 11
1989 Centre bore: 77.8
1989 Front offset: 11
1989 PCD: 5 X 127
1989 Rear offset: 11
1990 Centre bore: 77.8
1990 Front offset: 11
1990 PCD: 5 X 127
1990 Rear offset: 11