1983 Mazda GLC Tire Size

There are multiple tire sizes for your 1983 Mazda GLC that depend upon the trim level.  Look for your trim level below to get a color-coded explanation of your tire size.  Then pick the best tire size for your 1983 Mazda GLC.

155SR13

Simplified Size:  155-13

Simplified size is useful for shopping and buying tires.

The original tire size for your 1983 Mazda GLC is 155SR13.  A color-coded explanation of the 1983 Mazda GLC's tire size is shown below.

155

This number indicates that your tire has a width of 155 millimeters.

S

This tire has a speed rating of S, which means 111 mph (180 km/h) is the maximum speed that can be sustained for 10 minutes.  A higher speed becomes dangerous.

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
13

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

Trim Options:

Sport

175/70SR13

Simplified Size:  175-70-13

Simplified size is useful for shopping and buying tires.

The original tire size for your 1983 Mazda GLC is 175/70SR13.  A color-coded explanation of the 1983 Mazda GLC's tire size is shown below.

175

This number indicates that your tire has a width of 175 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 122 millimeters.

S

This tire has a speed rating of S, which means 111 mph (180 km/h) is the maximum speed that can be sustained for 10 minutes.  A higher speed becomes dangerous.

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
13

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

6.15R13/B

Simplified Size:  6.15-13

Simplified size is useful for shopping and buying tires.

The original tire size for your 1983 Mazda GLC is 6.15R13/B.  A color-coded explanation of the 1983 Mazda GLC's tire size is shown below.

6.15

This number indicates that your tire has a width of 6.15 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
13

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

B

The mark of B denotes your tire's load range, or ply rating.  A load range of B means that the tire has a ply rating of 4.  Letters further along in the alphabet represent stronger tires that can sustain higher inflation pressures.  Tires with higher inflation pressures can carry heavier loads.