# 1983 Oldsmobile Omega Tire Size

Your 1983 Oldsmobile Omega 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 1983 Oldsmobile Omega.

## P185/80R13

### Simplified Size: 185-80-13

Simplified size is useful for shopping and buying tires.

The original tire size for your 1983 Oldsmobile Omega is **P185/80R13**. A color-coded explanation of the 1983 Oldsmobile Omega's tire size is shown below.

P | This letter denotes the intended use of the tire.
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185 | This number indicates that your tire has a width of 185 millimeters. | ||||||

80 | This number means that your tire has an aspect ratio of 80%. In other words, your tire's sidewall height (from the edge of the rim to the tire's tread) is 80% of the width. In this case, the sidewall height works out to be 148 millimeters. | ||||||

R | This letter denotes how your tire was constructed. Radial is the standard construction method for about 99% of all tires sold today.
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13 | The tire size was designed to fit rims or wheels that are 13 inches in diameter. |

## P205/70R13

### Simplified Size: 205-70-13

Simplified size is useful for shopping and buying tires.

The original tire size for your 1983 Oldsmobile Omega is **P205/70R13**. A color-coded explanation of the 1983 Oldsmobile Omega's tire size is shown below.

P | This letter denotes the intended use of the tire.
| ||||||

205 | This number indicates that your tire has a width of 205 millimeters. | ||||||

70 | This number means that your tire has an aspect ratio of 70%. In other words, your tire's sidewall height (from the edge of the rim to the tire's tread) is 70% of the width. In this case, the sidewall height works out to be 143 millimeters. | ||||||

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

13 | The tire size was designed to fit rims or wheels that are 13 inches in diameter. |