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.


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.


This letter denotes the intended use of the tire.

PPassenger Vehicle
LTLight Truck
CCommercial Vehicle

This number indicates that your tire has a width of 145 millimeters.


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.


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

BBias Belt

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