2018 Chevy Spark Tire Size

The original tire size for your 2018 Chevy Spark is listed below. Tap on the box to view a color-coded explanation of the best Chevy Spark tire size.

Trim Options:

ACTIVLSLT

185/55R15 82H

Simplified Size:  185-55-15

Simplified size is useful for shopping and buying tires.

The original tire size for your 2018 Chevy Spark is 185/55R15 82H.  A color-coded explanation of the 2018 Chevy Spark's tire size is shown below.

185

This number indicates that your tire has a width of 185 millimeters.

55

This number means that your tire has an aspect ratio of 55%.  In other words, your tire's sidewall height (from the edge of the rim to the tire's tread) is 55% of the width.  In this case, the sidewall height works out to be 101 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
15

The tire size was designed to fit rims or wheels that are 15 inches in diameter.

82

This tire has a load index of 82, which means it's capable of carrying a load of 1045 pounds (475 kg) or less.  A higher number means the tire can carry more weight.  A lower number means the opposite.

H

This tire has a speed rating of H, which means 130 mph (210 km/h) is the maximum speed that can be sustained for 10 minutes.  A higher speed becomes dangerous.