2003 Hummer H1 Tire Size

Your 2003 Hummer H1 was manufactured with multiple tire sizes.  Choose a tire size below to get a color-coded explanation of the differences.  Then pick the best tire size for your 2003 Hummer H1.

37x12.50R17/E 129P

Simplified Size:  37x12.50-17

Simplified size is useful for shopping and buying tires.

The original tire size for your 2003 Hummer H1 is 37x12.50R17/E 129P.  A color-coded explanation of the 2003 Hummer H1'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
17

The tire size was designed to fit rims or wheels that are 17 inches in diameter.

E

The mark of E denotes your tire's load range, or ply rating.  A load range of E means that the tire has a ply rating of 10.  Letters further along in the alphabet represent stronger tires that can sustain higher inflation pressures.  Tires with higher inflation pressures can carry heavier loads.

129

This tire has a load index of 129, which means it's capable of carrying a load of NaN pounds (undefined kg) or less.  A higher number means the tire can carry more weight.  A lower number means the opposite.

P

This tire has a speed rating of P, which means 93 mph (150 km/h) is the maximum speed that can be sustained for 10 minutes.  A higher speed becomes dangerous.

37x12.50R17/E 129Q

Simplified Size:  37x12.50-17

Simplified size is useful for shopping and buying tires.

The original tire size for your 2003 Hummer H1 is 37x12.50R17/E 129Q.  A color-coded explanation of the 2003 Hummer H1'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
17

The tire size was designed to fit rims or wheels that are 17 inches in diameter.

E

The mark of E denotes your tire's load range, or ply rating.  A load range of E means that the tire has a ply rating of 10.  Letters further along in the alphabet represent stronger tires that can sustain higher inflation pressures.  Tires with higher inflation pressures can carry heavier loads.

129

This tire has a load index of 129, which means it's capable of carrying a load of NaN pounds (undefined kg) or less.  A higher number means the tire can carry more weight.  A lower number means the opposite.

Q

This tire has a speed rating of Q, which means 99 mph (160 km/h) is the maximum speed that can be sustained for 10 minutes.  A higher speed becomes dangerous.