1981 GMC Suburban Tire Size & Pressure

The 1981 GMC Suburban tire size depends on trim: the C1500, 5.0L Eng VIN H, Automatic Trans takes P235/75R15; the C1500, 5.0L Eng VIN H, Standard Trans, Trans Mfr CD MY6 takes P235/75R15; the C1500, 5.0L Eng VIN H, Standard Trans, Trans Mfr CD SM465/M20 takes P235/75R15; the K1500, Automatic Trans takes P215/75R15 XL; the K1500, Standard Trans takes P215/75R15 XL, per the factory service manual.

Factory-Spec Tire Size
Varies by trim
  • C1500, 5.0L Eng VIN H, Automatic Trans: P235/75R15
  • C1500, 5.0L Eng VIN H, Standard Trans, Trans Mfr CD MY6: P235/75R15
  • C1500, 5.0L Eng VIN H, Standard Trans, Trans Mfr CD SM465/M20: P235/75R15
  • K1500, Automatic Trans: P215/75R15 XL
  • K1500, Standard Trans: P215/75R15 XL
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C1500, 5.0L Eng VIN H, Automatic Trans

Tire Specifications

PositionTire SizePressureLoad IndexSpeed Rating
AllP235/75R15Door Placard
AllP235/75R15 XLDoor Placard
AllP235/75R15Door Placard
AllP235/75R15 XLDoor Placard
AllP235/75R15Door Placard
AllP235/75R15 XLDoor Placard
AllP235/75R15Door Placard
AllP235/75R15 XLDoor Placard

C1500, 5.0L Eng VIN H, Standard Trans, Trans Mfr CD MY6

Tire Specifications

PositionTire SizePressureLoad IndexSpeed Rating
AllP235/75R15Door Placard
AllP235/75R15 XLDoor Placard
AllP235/75R15Door Placard
AllP235/75R15 XLDoor Placard
AllP235/75R15Door Placard
AllP235/75R15 XLDoor Placard
AllP235/75R15Door Placard
AllP235/75R15 XLDoor Placard

C1500, 5.0L Eng VIN H, Standard Trans, Trans Mfr CD SM465/M20

Tire Specifications

PositionTire SizePressureLoad IndexSpeed Rating
AllP235/75R15Door Placard
AllP235/75R15 XLDoor Placard
AllP235/75R15Door Placard
AllP235/75R15 XLDoor Placard
AllP235/75R15Door Placard
AllP235/75R15 XLDoor Placard
AllP235/75R15Door Placard
AllP235/75R15 XLDoor Placard

K1500, Automatic Trans

Tire Specifications

PositionTire SizePressureLoad IndexSpeed Rating
AllP215/75R15 XLDoor Placard
AllP235/75R15Door Placard
AllP235/75R15 XLDoor Placard
AllP215/75R15 XLDoor Placard
AllP235/75R15Door Placard
AllP235/75R15 XLDoor Placard
AllP215/75R15 XLDoor Placard
AllP235/75R15Door Placard
AllP235/75R15 XLDoor Placard
AllP215/75R15 XLDoor Placard
AllP235/75R15Door Placard
AllP235/75R15 XLDoor Placard

K1500, Standard Trans

Tire Specifications

PositionTire SizePressureLoad IndexSpeed Rating
AllP215/75R15 XLDoor Placard
AllP235/75R15Door Placard
AllP235/75R15 XLDoor Placard
AllP215/75R15 XLDoor Placard
AllP235/75R15Door Placard
AllP235/75R15 XLDoor Placard
AllP215/75R15 XLDoor Placard
AllP235/75R15Door Placard
AllP235/75R15 XLDoor Placard
AllP215/75R15 XLDoor Placard
AllP235/75R15Door Placard
AllP235/75R15 XLDoor Placard

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Frequently Asked Questions

What size tires does a 1981 GMC Suburban take?

It depends on the trim: C1500, 5.0L Eng VIN H, Automatic Trans uses P235/75R15; C1500, 5.0L Eng VIN H, Standard Trans, Trans Mfr CD MY6 uses P235/75R15; C1500, 5.0L Eng VIN H, Standard Trans, Trans Mfr CD SM465/M20 uses P235/75R15; K1500, Automatic Trans uses P215/75R15 XL; K1500, Standard Trans uses P215/75R15 XL.

What is the tire pressure for a 1981 GMC Suburban?

Refer to the tire pressure placard on your vehicle's driver side door jamb for exact cold inflation pressures.

What is the bolt pattern on a 1981 GMC Suburban?

Bolt pattern data is available in the factory service manual.

Other GMC Suburban Years

Other GMC Models