1992 AM General Hummer Tire Size

The original tire size for your 1992 AM General Hummer is listed below. Tap on the box to view a color-coded explanation of the best AM General Hummer tire size.

37x12.50R16.5/D 123N

Simplified Size:  37x12.50-16.5

Simplified size is useful for shopping and buying tires.

The original tire size for your 1992 AM General Hummer is 37x12.50R16.5/D 123N.  A color-coded explanation of the 1992 AM General Hummer's tire size is shown below.

37

This mark reveals that your tire has a diameter of 37 inches.

12.50

This number indicates that your tire has a width of 12.50 inches.

R

This letter denotes how your tire was constructed.  Radial is the standard construction method for about 99% of all tires sold today.

RRadial
BBias Belt
DDiagonal
16.5

The tire size was designed to fit rims or wheels that are 16.5 inches in diameter.

D

The mark of D denotes your tire's load range, or ply rating.  A load range of D means that the tire has a ply rating of 8.  Letters further along in the alphabet represent stronger tires that can sustain higher inflation pressures.  Tires with higher inflation pressures can carry heavier loads.

123

This tire has a load index of 123, which means it's capable of carrying a load of 3410 pounds (1550 kg) or less.  A higher number means the tire can carry more weight.  A lower number means the opposite.

N

This tire has a speed rating of N, which means 86 mph (140 km/h) is the maximum speed that can be sustained for 10 minutes.  A higher speed becomes dangerous.