GMC S15 1986 Tire Pressures: Find Correct Tire Pressures by Trim & Size

Looking for the right tire pressures for your 1986 GMC S15? We've put together a comprehensive list of tire pressures for every trim and tire size to ensure you're driving with optimal performance and safety.

GMC S15 1986 Tire Pressures By Trim

GMC S15 models manufactured in 1986 came in various trims, each equipped with specific tire sizes. Check out the recommended tire pressures below. We've also listed optional tires for your convenience. For additional details, refer to your vehicle owner's manual!

Base Trim:

Tire Pressures by Size for GMC S15 1986

Here, you'll find detailed information on tire pressures organized by tire size. It's essential to ensure your vehicle's tires are properly inflated for top performance and safety on the road. Don't want to pay for air for your tires? Use our search tool to find a free air pump near you.

Other Manufacturing Years

What Do Tire Sizes Mean?

When you take a quick look at a tire sidewall, the sequence of numbers and letters might seem mysterious, but they actually communicate crucial details about the tire's specifications. Let's break down the sample tire size P235/75R15 to uncover its significance.

Width: 235

The first number, 235, denotes the width of the tire in millimeters. In this case, the tire's width spans 235 millimeters from one sidewall to the other.

Profile: 75

Following the width is the aspect ratio, represented by the number 75. This figure indicates the height of the tire's sidewall as a percentage of its width. In our example, the sidewall height is 75% of the tire's width.

Rim Size: 15

The next number, 15, specifies the diameter of the wheel rim in inches that the tire is designed to fit. Therefore, this tire is intended for a 15-inch diameter rim.