2006 Pontiac GTO Tire Size

Your Pontiac was manufactured with different tire sizes.  To determine the best tire size for your specific 2006 Pontiac GTO, we first need to determine your rim size.  Please review the information below.

How to Determine Rim Size

Check your existing tires.  Your Pontiac GTO's rim size is the number to the right of the R.  In the example pictured here, the tire size fits 16-inch rims.

Rim Size Selection

Now that you know your rim size, make a selection below to filter your results.

17-Inch Rims

2006 Pontiac GTO

 

The original tire size for your 2006 Pontiac GTO is listed below. Tap on the box to view a color-coded explanation of your Pontiac GTO's' tire size.

245/45ZR17 95W

Simplified Size:  245-45-17

Simplified size is useful for shopping and buying tires.

The original tire size for your 2006 Pontiac GTO is 245/45ZR17 95W.  A color-coded explanation of the 2006 Pontiac GTO's tire size is shown below.

245

This number indicates that your tire has a width of 245 millimeters.

17

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

95

This tire has a load index of 95, which means it's capable of carrying a load of 1518 pounds (690 kg) or less.  A higher number means the tire can carry more weight.  A lower number means the opposite.

Z

This tire has a speed class of Z, which means it's part of an elite speed class of 149 mph or more (240 km/h).  A tire's speed class is less specific than the speed rating.

45

This number means that your tire has an aspect ratio of 45%.  In other words, your tire's sidewall height (from the edge of the rim to the tire's tread) is 45% of the width.  In this case, the sidewall height works out to be 110 millimeters.

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
W

This tire has a speed rating of W, which means 167 mph (270 km/h) is the maximum speed that can be sustained for 10 minutes.  A higher speed becomes dangerous.

18-Inch Rims

2006 Pontiac GTO

 

The original tire size for your 2006 Pontiac GTO is listed below. Tap on the box to view a color-coded explanation of your Pontiac GTO's' tire size.

Trim Options:

(Summer Only)

235/40ZR18 91W

Simplified Size:  235-40-18

Simplified size is useful for shopping and buying tires.

The original tire size for your 2006 Pontiac GTO is 235/40ZR18 91W.  A color-coded explanation of the 2006 Pontiac GTO's tire size is shown below.

235

This number indicates that your tire has a width of 235 millimeters.

18

The tire size was designed to fit rims or wheels that are 18 inches in diameter.

91

This tire has a load index of 91, which means it's capable of carrying a load of 1353 pounds (615 kg) or less.  A higher number means the tire can carry more weight.  A lower number means the opposite.

Z

This tire has a speed class of Z, which means it's part of an elite speed class of 149 mph or more (240 km/h).  A tire's speed class is less specific than the speed rating.

40

This number means that your tire has an aspect ratio of 40%.  In other words, your tire's sidewall height (from the edge of the rim to the tire's tread) is 40% of the width.  In this case, the sidewall height works out to be 94 millimeters.

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
W

This tire has a speed rating of W, which means 167 mph (270 km/h) is the maximum speed that can be sustained for 10 minutes.  A higher speed becomes dangerous.