1990 Geo Metro Tire Size

The original tire size for your 1990 Geo Metro is listed below. Tap on the box to view a color-coded explanation of the best Geo Metro tire size.

P145/80R12

Simplified Size:  145-80-12

Simplified size is useful for shopping and buying tires.

The original tire size for your 1990 Geo Metro is P145/80R12.  A color-coded explanation of the 1990 Geo Metro's tire size is shown below.

P

This letter denotes the intended use of the tire.

PPassenger Vehicle
LTLight Truck
CCommercial Vehicle
145

This number indicates that your tire has a width of 145 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 116 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
12

The tire size was designed to fit rims or wheels that are 12 inches in diameter.